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Finding the Fourth Proportional to 28,155.74, 42,189.16 and 22,865.01

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Solution

The fourth proportional to 28,155.74, 42,189.16 and 22,865.01 is: 34,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.74 : 42,189.16 = 22,865.01 : x
  2. Step 2: Convert to fraction form
    28,155.74/42,189.16 = 22,865.01/x
  3. Step 3: Cross multiply
    28,155.74x = 42,189.16 × 22,865.01
  4. Step 4: Simplify right side
    28,155.74x = 964,655,479.29
  5. Step 5: Solve for x
    x = 964,655,479.29/28,155.74
  6. Step 6: Final answer
    x = 34,261.41

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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.