Home / 21,515.17-32,236.35-13,177.79

Finding the Fourth Proportional to 21,515.17, 32,236.35 and 13,177.79

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Solution

The fourth proportional to 21,515.17, 32,236.35 and 13,177.79 is: 19,744.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.17 : 32,236.35 = 13,177.79 : x
  2. Step 2: Convert to fraction form
    21,515.17/32,236.35 = 13,177.79/x
  3. Step 3: Cross multiply
    21,515.17x = 32,236.35 × 13,177.79
  4. Step 4: Simplify right side
    21,515.17x = 424,803,872.14
  5. Step 5: Solve for x
    x = 424,803,872.14/21,515.17
  6. Step 6: Final answer
    x = 19,744.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.