Home / 15,265.18-21,063.47-8,550.78

Finding the Fourth Proportional to 15,265.18, 21,063.47 and 8,550.78

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Solution

The fourth proportional to 15,265.18, 21,063.47 and 8,550.78 is: 11,798.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,265.18 : 21,063.47 = 8,550.78 : x
  2. Step 2: Convert to fraction form
    15,265.18/21,063.47 = 8,550.78/x
  3. Step 3: Cross multiply
    15,265.18x = 21,063.47 × 8,550.78
  4. Step 4: Simplify right side
    15,265.18x = 180,109,098.01
  5. Step 5: Solve for x
    x = 180,109,098.01/15,265.18
  6. Step 6: Final answer
    x = 11,798.69

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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.