Home / 21,541.08-29,734.74-12,591.47

Finding the Fourth Proportional to 21,541.08, 29,734.74 and 12,591.47

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Solution

The fourth proportional to 21,541.08, 29,734.74 and 12,591.47 is: 17,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.08 : 29,734.74 = 12,591.47 : x
  2. Step 2: Convert to fraction form
    21,541.08/29,734.74 = 12,591.47/x
  3. Step 3: Cross multiply
    21,541.08x = 29,734.74 × 12,591.47
  4. Step 4: Simplify right side
    21,541.08x = 374,403,937.99
  5. Step 5: Solve for x
    x = 374,403,937.99/21,541.08
  6. Step 6: Final answer
    x = 17,380.93

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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.