Home / 28,453.91-42,702.65-12,882.47

Finding the Fourth Proportional to 28,453.91, 42,702.65 and 12,882.47

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Solution

The fourth proportional to 28,453.91, 42,702.65 and 12,882.47 is: 19,333.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.91 : 42,702.65 = 12,882.47 : x
  2. Step 2: Convert to fraction form
    28,453.91/42,702.65 = 12,882.47/x
  3. Step 3: Cross multiply
    28,453.91x = 42,702.65 × 12,882.47
  4. Step 4: Simplify right side
    28,453.91x = 550,115,543.13
  5. Step 5: Solve for x
    x = 550,115,543.13/28,453.91
  6. Step 6: Final answer
    x = 19,333.57

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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.