Home / 21,617.42-29,827.50-13,124.01

Finding the Fourth Proportional to 21,617.42, 29,827.50 and 13,124.01

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Solution

The fourth proportional to 21,617.42, 29,827.50 and 13,124.01 is: 18,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.42 : 29,827.50 = 13,124.01 : x
  2. Step 2: Convert to fraction form
    21,617.42/29,827.50 = 13,124.01/x
  3. Step 3: Cross multiply
    21,617.42x = 29,827.50 × 13,124.01
  4. Step 4: Simplify right side
    21,617.42x = 391,456,520.13
  5. Step 5: Solve for x
    x = 391,456,520.13/21,617.42
  6. Step 6: Final answer
    x = 18,108.38

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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.