Home / 28,437.86-42,642.75-8,711.66

Finding the Fourth Proportional to 28,437.86, 42,642.75 and 8,711.66

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Solution

The fourth proportional to 28,437.86, 42,642.75 and 8,711.66 is: 13,063.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.86 : 42,642.75 = 8,711.66 : x
  2. Step 2: Convert to fraction form
    28,437.86/42,642.75 = 8,711.66/x
  3. Step 3: Cross multiply
    28,437.86x = 42,642.75 × 8,711.66
  4. Step 4: Simplify right side
    28,437.86x = 371,489,139.47
  5. Step 5: Solve for x
    x = 371,489,139.47/28,437.86
  6. Step 6: Final answer
    x = 13,063.19

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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.