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Finding the Fourth Proportional to 28,557.34, 42,834.95 and 7,497.19

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Solution

The fourth proportional to 28,557.34, 42,834.95 and 7,497.19 is: 11,245.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.34 : 42,834.95 = 7,497.19 : x
  2. Step 2: Convert to fraction form
    28,557.34/42,834.95 = 7,497.19/x
  3. Step 3: Cross multiply
    28,557.34x = 42,834.95 × 7,497.19
  4. Step 4: Simplify right side
    28,557.34x = 321,141,824.05
  5. Step 5: Solve for x
    x = 321,141,824.05/28,557.34
  6. Step 6: Final answer
    x = 11,245.51

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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.