Home / 21,591.27-29,796.02-12,518.40

Finding the Fourth Proportional to 21,591.27, 29,796.02 and 12,518.40

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Solution

The fourth proportional to 21,591.27, 29,796.02 and 12,518.40 is: 17,275.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,591.27 : 29,796.02 = 12,518.40 : x
  2. Step 2: Convert to fraction form
    21,591.27/29,796.02 = 12,518.40/x
  3. Step 3: Cross multiply
    21,591.27x = 29,796.02 × 12,518.40
  4. Step 4: Simplify right side
    21,591.27x = 372,998,496.77
  5. Step 5: Solve for x
    x = 372,998,496.77/21,591.27
  6. Step 6: Final answer
    x = 17,275.43

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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.