Home / 39,814.62-54,943-21,909.61

Finding the Fourth Proportional to 39,814.62, 54,943 and 21,909.61

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Solution

The fourth proportional to 39,814.62, 54,943 and 21,909.61 is: 30,234.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,814.62 : 54,943 = 21,909.61 : x
  2. Step 2: Convert to fraction form
    39,814.62/54,943 = 21,909.61/x
  3. Step 3: Cross multiply
    39,814.62x = 54,943 × 21,909.61
  4. Step 4: Simplify right side
    39,814.62x = 1,203,779,702.23
  5. Step 5: Solve for x
    x = 1,203,779,702.23/39,814.62
  6. Step 6: Final answer
    x = 30,234.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.