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Finding the Fourth Proportional to 22,687.79, 34,041.42 and 7,888.64

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Solution

The fourth proportional to 22,687.79, 34,041.42 and 7,888.64 is: 11,836.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,687.79 : 34,041.42 = 7,888.64 : x
  2. Step 2: Convert to fraction form
    22,687.79/34,041.42 = 7,888.64/x
  3. Step 3: Cross multiply
    22,687.79x = 34,041.42 × 7,888.64
  4. Step 4: Simplify right side
    22,687.79x = 268,540,337.26
  5. Step 5: Solve for x
    x = 268,540,337.26/22,687.79
  6. Step 6: Final answer
    x = 11,836.34

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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.