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Finding the Fourth Proportional to 25,616.70, 35,345.70 and 15,550.44

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Solution

The fourth proportional to 25,616.70, 35,345.70 and 15,550.44 is: 21,456.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,616.70 : 35,345.70 = 15,550.44 : x
  2. Step 2: Convert to fraction form
    25,616.70/35,345.70 = 15,550.44/x
  3. Step 3: Cross multiply
    25,616.70x = 35,345.70 × 15,550.44
  4. Step 4: Simplify right side
    25,616.70x = 549,641,187.11
  5. Step 5: Solve for x
    x = 549,641,187.11/25,616.70
  6. Step 6: Final answer
    x = 21,456.36

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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.