Home / 18,930.20-26,122.61-10,430.66

Finding the Fourth Proportional to 18,930.20, 26,122.61 and 10,430.66

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Solution

The fourth proportional to 18,930.20, 26,122.61 and 10,430.66 is: 14,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.20 : 26,122.61 = 10,430.66 : x
  2. Step 2: Convert to fraction form
    18,930.20/26,122.61 = 10,430.66/x
  3. Step 3: Cross multiply
    18,930.20x = 26,122.61 × 10,430.66
  4. Step 4: Simplify right side
    18,930.20x = 272,476,154.61
  5. Step 5: Solve for x
    x = 272,476,154.61/18,930.20
  6. Step 6: Final answer
    x = 14,393.73

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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.