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Finding the Fourth Proportional to 18,266.72, 25,207.12 and 10,712

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Solution

The fourth proportional to 18,266.72, 25,207.12 and 10,712 is: 14,782.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.72 : 25,207.12 = 10,712 : x
  2. Step 2: Convert to fraction form
    18,266.72/25,207.12 = 10,712/x
  3. Step 3: Cross multiply
    18,266.72x = 25,207.12 × 10,712
  4. Step 4: Simplify right side
    18,266.72x = 270,018,669.44
  5. Step 5: Solve for x
    x = 270,018,669.44/18,266.72
  6. Step 6: Final answer
    x = 14,782.00

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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.