Home / 13,988.20-19,303.74-7,614.76

Finding the Fourth Proportional to 13,988.20, 19,303.74 and 7,614.76

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Solution

The fourth proportional to 13,988.20, 19,303.74 and 7,614.76 is: 10,508.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.20 : 19,303.74 = 7,614.76 : x
  2. Step 2: Convert to fraction form
    13,988.20/19,303.74 = 7,614.76/x
  3. Step 3: Cross multiply
    13,988.20x = 19,303.74 × 7,614.76
  4. Step 4: Simplify right side
    13,988.20x = 146,993,347.20
  5. Step 5: Solve for x
    x = 146,993,347.20/13,988.20
  6. Step 6: Final answer
    x = 10,508.38

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Half scale
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Double scale
Find fourth proportional to 13,989.20, 19,305.12 and 7,615.76
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.