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Finding the Fourth Proportional to 28,239.40, 42,358.37 and 7,463.08

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Solution

The fourth proportional to 28,239.40, 42,358.37 and 7,463.08 is: 11,194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.40 : 42,358.37 = 7,463.08 : x
  2. Step 2: Convert to fraction form
    28,239.40/42,358.37 = 7,463.08/x
  3. Step 3: Cross multiply
    28,239.40x = 42,358.37 × 7,463.08
  4. Step 4: Simplify right side
    28,239.40x = 316,123,692.19
  5. Step 5: Solve for x
    x = 316,123,692.19/28,239.40
  6. Step 6: Final answer
    x = 11,194.42

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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.