Home / 42,121.53-63,161.10-14,031.63

Finding the Fourth Proportional to 42,121.53, 63,161.10 and 14,031.63

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Solution

The fourth proportional to 42,121.53, 63,161.10 and 14,031.63 is: 21,040.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,121.53 : 63,161.10 = 14,031.63 : x
  2. Step 2: Convert to fraction form
    42,121.53/63,161.10 = 14,031.63/x
  3. Step 3: Cross multiply
    42,121.53x = 63,161.10 × 14,031.63
  4. Step 4: Simplify right side
    42,121.53x = 886,253,185.59
  5. Step 5: Solve for x
    x = 886,253,185.59/42,121.53
  6. Step 6: Final answer
    x = 21,040.38

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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.