Home / 28,635.07-42,931.80-19,251.78

Finding the Fourth Proportional to 28,635.07, 42,931.80 and 19,251.78

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Solution

The fourth proportional to 28,635.07, 42,931.80 and 19,251.78 is: 28,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.07 : 42,931.80 = 19,251.78 : x
  2. Step 2: Convert to fraction form
    28,635.07/42,931.80 = 19,251.78/x
  3. Step 3: Cross multiply
    28,635.07x = 42,931.80 × 19,251.78
  4. Step 4: Simplify right side
    28,635.07x = 826,513,353.46
  5. Step 5: Solve for x
    x = 826,513,353.46/28,635.07
  6. Step 6: Final answer
    x = 28,863.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.