Home / 15,509.04-21,407.16-10,543.92

Finding the Fourth Proportional to 15,509.04, 21,407.16 and 10,543.92

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Solution

The fourth proportional to 15,509.04, 21,407.16 and 10,543.92 is: 14,553.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.04 : 21,407.16 = 10,543.92 : x
  2. Step 2: Convert to fraction form
    15,509.04/21,407.16 = 10,543.92/x
  3. Step 3: Cross multiply
    15,509.04x = 21,407.16 × 10,543.92
  4. Step 4: Simplify right side
    15,509.04x = 225,715,382.47
  5. Step 5: Solve for x
    x = 225,715,382.47/15,509.04
  6. Step 6: Final answer
    x = 14,553.79

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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.