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Finding the Fourth Proportional to 17,859.48, 26,780.04 and 10,478.49

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Solution

The fourth proportional to 17,859.48, 26,780.04 and 10,478.49 is: 15,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,859.48 : 26,780.04 = 10,478.49 : x
  2. Step 2: Convert to fraction form
    17,859.48/26,780.04 = 10,478.49/x
  3. Step 3: Cross multiply
    17,859.48x = 26,780.04 × 10,478.49
  4. Step 4: Simplify right side
    17,859.48x = 280,614,381.34
  5. Step 5: Solve for x
    x = 280,614,381.34/17,859.48
  6. Step 6: Final answer
    x = 15,712.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.