Home / 15,954.55-22,017.36-8,785.20

Finding the Fourth Proportional to 15,954.55, 22,017.36 and 8,785.20

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Solution

The fourth proportional to 15,954.55, 22,017.36 and 8,785.20 is: 12,123.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,954.55 : 22,017.36 = 8,785.20 : x
  2. Step 2: Convert to fraction form
    15,954.55/22,017.36 = 8,785.20/x
  3. Step 3: Cross multiply
    15,954.55x = 22,017.36 × 8,785.20
  4. Step 4: Simplify right side
    15,954.55x = 193,426,800.99
  5. Step 5: Solve for x
    x = 193,426,800.99/15,954.55
  6. Step 6: Final answer
    x = 12,123.61

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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.