Home / 28,210.28-38,931.46-15,634.22

Finding the Fourth Proportional to 28,210.28, 38,931.46 and 15,634.22

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Solution

The fourth proportional to 28,210.28, 38,931.46 and 15,634.22 is: 21,575.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.28 : 38,931.46 = 15,634.22 : x
  2. Step 2: Convert to fraction form
    28,210.28/38,931.46 = 15,634.22/x
  3. Step 3: Cross multiply
    28,210.28x = 38,931.46 × 15,634.22
  4. Step 4: Simplify right side
    28,210.28x = 608,663,010.56
  5. Step 5: Solve for x
    x = 608,663,010.56/28,210.28
  6. Step 6: Final answer
    x = 21,575.93

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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.