Home / 21,516.17-32,237.85-13,178.79

Finding the Fourth Proportional to 21,516.17, 32,237.85 and 13,178.79

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Solution

The fourth proportional to 21,516.17, 32,237.85 and 13,178.79 is: 19,745.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.17 : 32,237.85 = 13,178.79 : x
  2. Step 2: Convert to fraction form
    21,516.17/32,237.85 = 13,178.79/x
  3. Step 3: Cross multiply
    21,516.17x = 32,237.85 × 13,178.79
  4. Step 4: Simplify right side
    21,516.17x = 424,855,855.20
  5. Step 5: Solve for x
    x = 424,855,855.20/21,516.17
  6. Step 6: Final answer
    x = 19,745.89

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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.