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Finding the Fourth Proportional to 28,395.52, 42,595.84 and 7,618.88

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Solution

The fourth proportional to 28,395.52, 42,595.84 and 7,618.88 is: 11,429.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.52 : 42,595.84 = 7,618.88 : x
  2. Step 2: Convert to fraction form
    28,395.52/42,595.84 = 7,618.88/x
  3. Step 3: Cross multiply
    28,395.52x = 42,595.84 × 7,618.88
  4. Step 4: Simplify right side
    28,395.52x = 324,532,593.46
  5. Step 5: Solve for x
    x = 324,532,593.46/28,395.52
  6. Step 6: Final answer
    x = 11,429.01

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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.