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Finding the Fourth Proportional to 15,954.42, 22,017.62 and 8,785.10

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Solution

The fourth proportional to 15,954.42, 22,017.62 and 8,785.10 is: 12,123.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,954.42 : 22,017.62 = 8,785.10 : x
  2. Step 2: Convert to fraction form
    15,954.42/22,017.62 = 8,785.10/x
  3. Step 3: Cross multiply
    15,954.42x = 22,017.62 × 8,785.10
  4. Step 4: Simplify right side
    15,954.42x = 193,426,993.46
  5. Step 5: Solve for x
    x = 193,426,993.46/15,954.42
  6. Step 6: Final answer
    x = 12,123.72

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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.