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Finding the Fourth Proportional to 14,688.76, 20,270.48 and 8,401.14

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Solution

The fourth proportional to 14,688.76, 20,270.48 and 8,401.14 is: 11,593.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.76 : 20,270.48 = 8,401.14 : x
  2. Step 2: Convert to fraction form
    14,688.76/20,270.48 = 8,401.14/x
  3. Step 3: Cross multiply
    14,688.76x = 20,270.48 × 8,401.14
  4. Step 4: Simplify right side
    14,688.76x = 170,295,140.35
  5. Step 5: Solve for x
    x = 170,295,140.35/14,688.76
  6. Step 6: Final answer
    x = 11,593.57

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Half scale
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Double scale
Find fourth proportional to 14,689.76, 20,271.86 and 8,402.14
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.