Home / 10,389.28-14,336.68-5,672.68

Finding the Fourth Proportional to 10,389.28, 14,336.68 and 5,672.68

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Solution

The fourth proportional to 10,389.28, 14,336.68 and 5,672.68 is: 7,828.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.28 : 14,336.68 = 5,672.68 : x
  2. Step 2: Convert to fraction form
    10,389.28/14,336.68 = 5,672.68/x
  3. Step 3: Cross multiply
    10,389.28x = 14,336.68 × 5,672.68
  4. Step 4: Simplify right side
    10,389.28x = 81,327,397.90
  5. Step 5: Solve for x
    x = 81,327,397.90/10,389.28
  6. Step 6: Final answer
    x = 7,828.01

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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.