Home / 15,529.20-21,423.36-10,356.28

Finding the Fourth Proportional to 15,529.20, 21,423.36 and 10,356.28

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Solution

The fourth proportional to 15,529.20, 21,423.36 and 10,356.28 is: 14,287.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.20 : 21,423.36 = 10,356.28 : x
  2. Step 2: Convert to fraction form
    15,529.20/21,423.36 = 10,356.28/x
  3. Step 3: Cross multiply
    15,529.20x = 21,423.36 × 10,356.28
  4. Step 4: Simplify right side
    15,529.20x = 221,866,314.70
  5. Step 5: Solve for x
    x = 221,866,314.70/15,529.20
  6. Step 6: Final answer
    x = 14,287.04

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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.