Home / 14,688.48-20,270.88-8,401.92

Finding the Fourth Proportional to 14,688.48, 20,270.88 and 8,401.92

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Solution

The fourth proportional to 14,688.48, 20,270.88 and 8,401.92 is: 11,595.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.48 : 20,270.88 = 8,401.92 : x
  2. Step 2: Convert to fraction form
    14,688.48/20,270.88 = 8,401.92/x
  3. Step 3: Cross multiply
    14,688.48x = 20,270.88 × 8,401.92
  4. Step 4: Simplify right side
    14,688.48x = 170,314,312.09
  5. Step 5: Solve for x
    x = 170,314,312.09/14,688.48
  6. Step 6: Final answer
    x = 11,595.09

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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.