Home / 28,531.91-42,818.87-13,539.08

Finding the Fourth Proportional to 28,531.91, 42,818.87 and 13,539.08

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Solution

The fourth proportional to 28,531.91, 42,818.87 and 13,539.08 is: 20,318.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.91 : 42,818.87 = 13,539.08 : x
  2. Step 2: Convert to fraction form
    28,531.91/42,818.87 = 13,539.08/x
  3. Step 3: Cross multiply
    28,531.91x = 42,818.87 × 13,539.08
  4. Step 4: Simplify right side
    28,531.91x = 579,728,247.33
  5. Step 5: Solve for x
    x = 579,728,247.33/28,531.91
  6. Step 6: Final answer
    x = 20,318.59

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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.