Home / 15,618.45-21,542.85-9,565.86

Finding the Fourth Proportional to 15,618.45, 21,542.85 and 9,565.86

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Solution

The fourth proportional to 15,618.45, 21,542.85 and 9,565.86 is: 13,194.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.45 : 21,542.85 = 9,565.86 : x
  2. Step 2: Convert to fraction form
    15,618.45/21,542.85 = 9,565.86/x
  3. Step 3: Cross multiply
    15,618.45x = 21,542.85 × 9,565.86
  4. Step 4: Simplify right side
    15,618.45x = 206,075,887.10
  5. Step 5: Solve for x
    x = 206,075,887.10/15,618.45
  6. Step 6: Final answer
    x = 13,194.39

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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.