Home / 21,425.85-29,560.51-12,471.45

Finding the Fourth Proportional to 21,425.85, 29,560.51 and 12,471.45

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Solution

The fourth proportional to 21,425.85, 29,560.51 and 12,471.45 is: 17,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.85 : 29,560.51 = 12,471.45 : x
  2. Step 2: Convert to fraction form
    21,425.85/29,560.51 = 12,471.45/x
  3. Step 3: Cross multiply
    21,425.85x = 29,560.51 × 12,471.45
  4. Step 4: Simplify right side
    21,425.85x = 368,662,493.45
  5. Step 5: Solve for x
    x = 368,662,493.45/21,425.85
  6. Step 6: Final answer
    x = 17,206.43

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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.