Home / 20,748.52-28,641.55-15,434.11

Finding the Fourth Proportional to 20,748.52, 28,641.55 and 15,434.11

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Solution

The fourth proportional to 20,748.52, 28,641.55 and 15,434.11 is: 21,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.52 : 28,641.55 = 15,434.11 : x
  2. Step 2: Convert to fraction form
    20,748.52/28,641.55 = 15,434.11/x
  3. Step 3: Cross multiply
    20,748.52x = 28,641.55 × 15,434.11
  4. Step 4: Simplify right side
    20,748.52x = 442,056,690.06
  5. Step 5: Solve for x
    x = 442,056,690.06/20,748.52
  6. Step 6: Final answer
    x = 21,305.46

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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.