Home / 21,172.59-29,219.90-11,740.95

Finding the Fourth Proportional to 21,172.59, 29,219.90 and 11,740.95

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Solution

The fourth proportional to 21,172.59, 29,219.90 and 11,740.95 is: 16,203.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.59 : 29,219.90 = 11,740.95 : x
  2. Step 2: Convert to fraction form
    21,172.59/29,219.90 = 11,740.95/x
  3. Step 3: Cross multiply
    21,172.59x = 29,219.90 × 11,740.95
  4. Step 4: Simplify right side
    21,172.59x = 343,069,326.20
  5. Step 5: Solve for x
    x = 343,069,326.20/21,172.59
  6. Step 6: Final answer
    x = 16,203.47

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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.