Home / 18,717.10-25,821.32-12,665.18

Finding the Fourth Proportional to 18,717.10, 25,821.32 and 12,665.18

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Solution

The fourth proportional to 18,717.10, 25,821.32 and 12,665.18 is: 17,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.10 : 25,821.32 = 12,665.18 : x
  2. Step 2: Convert to fraction form
    18,717.10/25,821.32 = 12,665.18/x
  3. Step 3: Cross multiply
    18,717.10x = 25,821.32 × 12,665.18
  4. Step 4: Simplify right side
    18,717.10x = 327,031,666.86
  5. Step 5: Solve for x
    x = 327,031,666.86/18,717.10
  6. Step 6: Final answer
    x = 17,472.35

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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.