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Finding the Fourth Proportional to 25,065.90, 34,590.87 and 13,887.90

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Solution

The fourth proportional to 25,065.90, 34,590.87 and 13,887.90 is: 19,165.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,065.90 : 34,590.87 = 13,887.90 : x
  2. Step 2: Convert to fraction form
    25,065.90/34,590.87 = 13,887.90/x
  3. Step 3: Cross multiply
    25,065.90x = 34,590.87 × 13,887.90
  4. Step 4: Simplify right side
    25,065.90x = 480,394,543.47
  5. Step 5: Solve for x
    x = 480,394,543.47/25,065.90
  6. Step 6: Final answer
    x = 19,165.26

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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.