Home / 10,501.28-14,491.68-5,785.40

Finding the Fourth Proportional to 10,501.28, 14,491.68 and 5,785.40

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Solution

The fourth proportional to 10,501.28, 14,491.68 and 5,785.40 is: 7,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,501.28 : 14,491.68 = 5,785.40 : x
  2. Step 2: Convert to fraction form
    10,501.28/14,491.68 = 5,785.40/x
  3. Step 3: Cross multiply
    10,501.28x = 14,491.68 × 5,785.40
  4. Step 4: Simplify right side
    10,501.28x = 83,840,165.47
  5. Step 5: Solve for x
    x = 83,840,165.47/10,501.28
  6. Step 6: Final answer
    x = 7,983.80

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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.