Home / 12,556.20-18,834.30-9,931.80

Finding the Fourth Proportional to 12,556.20, 18,834.30 and 9,931.80

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Solution

The fourth proportional to 12,556.20, 18,834.30 and 9,931.80 is: 14,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.20 : 18,834.30 = 9,931.80 : x
  2. Step 2: Convert to fraction form
    12,556.20/18,834.30 = 9,931.80/x
  3. Step 3: Cross multiply
    12,556.20x = 18,834.30 × 9,931.80
  4. Step 4: Simplify right side
    12,556.20x = 187,058,500.74
  5. Step 5: Solve for x
    x = 187,058,500.74/12,556.20
  6. Step 6: Final answer
    x = 14,897.70

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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.