Home / 15,447.57-21,321.48-10,149.57

Finding the Fourth Proportional to 15,447.57, 21,321.48 and 10,149.57

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Solution

The fourth proportional to 15,447.57, 21,321.48 and 10,149.57 is: 14,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.57 : 21,321.48 = 10,149.57 : x
  2. Step 2: Convert to fraction form
    15,447.57/21,321.48 = 10,149.57/x
  3. Step 3: Cross multiply
    15,447.57x = 21,321.48 × 10,149.57
  4. Step 4: Simplify right side
    15,447.57x = 216,403,853.76
  5. Step 5: Solve for x
    x = 216,403,853.76/15,447.57
  6. Step 6: Final answer
    x = 14,008.93

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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.