Home / 28,210.08-38,929.92-15,634.56

Finding the Fourth Proportional to 28,210.08, 38,929.92 and 15,634.56

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Solution

The fourth proportional to 28,210.08, 38,929.92 and 15,634.56 is: 21,575.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.08 : 38,929.92 = 15,634.56 : x
  2. Step 2: Convert to fraction form
    28,210.08/38,929.92 = 15,634.56/x
  3. Step 3: Cross multiply
    28,210.08x = 38,929.92 × 15,634.56
  4. Step 4: Simplify right side
    28,210.08x = 608,652,170.04
  5. Step 5: Solve for x
    x = 608,652,170.04/28,210.08
  6. Step 6: Final answer
    x = 21,575.70

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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.