Home / 21,541.72-29,728.26-13,045.42

Finding the Fourth Proportional to 21,541.72, 29,728.26 and 13,045.42

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Solution

The fourth proportional to 21,541.72, 29,728.26 and 13,045.42 is: 18,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.72 : 29,728.26 = 13,045.42 : x
  2. Step 2: Convert to fraction form
    21,541.72/29,728.26 = 13,045.42/x
  3. Step 3: Cross multiply
    21,541.72x = 29,728.26 × 13,045.42
  4. Step 4: Simplify right side
    21,541.72x = 387,817,637.57
  5. Step 5: Solve for x
    x = 387,817,637.57/21,541.72
  6. Step 6: Final answer
    x = 18,003.10

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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.