Home / 21,197.95-29,244.85-12,700.43

Finding the Fourth Proportional to 21,197.95, 29,244.85 and 12,700.43

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Solution

The fourth proportional to 21,197.95, 29,244.85 and 12,700.43 is: 17,521.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.95 : 29,244.85 = 12,700.43 : x
  2. Step 2: Convert to fraction form
    21,197.95/29,244.85 = 12,700.43/x
  3. Step 3: Cross multiply
    21,197.95x = 29,244.85 × 12,700.43
  4. Step 4: Simplify right side
    21,197.95x = 371,422,259.27
  5. Step 5: Solve for x
    x = 371,422,259.27/21,197.95
  6. Step 6: Final answer
    x = 17,521.61

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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.