Home / 21,103.10-29,060.28-18,864.16

Finding the Fourth Proportional to 21,103.10, 29,060.28 and 18,864.16

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Solution

The fourth proportional to 21,103.10, 29,060.28 and 18,864.16 is: 25,977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.10 : 29,060.28 = 18,864.16 : x
  2. Step 2: Convert to fraction form
    21,103.10/29,060.28 = 18,864.16/x
  3. Step 3: Cross multiply
    21,103.10x = 29,060.28 × 18,864.16
  4. Step 4: Simplify right side
    21,103.10x = 548,197,807.89
  5. Step 5: Solve for x
    x = 548,197,807.89/21,103.10
  6. Step 6: Final answer
    x = 25,977.12

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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.