Home / 21,397.98-32,128.13-15,190.95

Finding the Fourth Proportional to 21,397.98, 32,128.13 and 15,190.95

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Solution

The fourth proportional to 21,397.98, 32,128.13 and 15,190.95 is: 22,808.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.98 : 32,128.13 = 15,190.95 : x
  2. Step 2: Convert to fraction form
    21,397.98/32,128.13 = 15,190.95/x
  3. Step 3: Cross multiply
    21,397.98x = 32,128.13 × 15,190.95
  4. Step 4: Simplify right side
    21,397.98x = 488,056,740.47
  5. Step 5: Solve for x
    x = 488,056,740.47/21,397.98
  6. Step 6: Final answer
    x = 22,808.54

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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.