Home / 28,285.29-42,430.06-8,565.43

Finding the Fourth Proportional to 28,285.29, 42,430.06 and 8,565.43

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Solution

The fourth proportional to 28,285.29, 42,430.06 and 8,565.43 is: 12,848.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.29 : 42,430.06 = 8,565.43 : x
  2. Step 2: Convert to fraction form
    28,285.29/42,430.06 = 8,565.43/x
  3. Step 3: Cross multiply
    28,285.29x = 42,430.06 × 8,565.43
  4. Step 4: Simplify right side
    28,285.29x = 363,431,793.49
  5. Step 5: Solve for x
    x = 363,431,793.49/28,285.29
  6. Step 6: Final answer
    x = 12,848.79

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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.