Home / 28,188.73-42,284.40-15,699.37

Finding the Fourth Proportional to 28,188.73, 42,284.40 and 15,699.37

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Solution

The fourth proportional to 28,188.73, 42,284.40 and 15,699.37 is: 23,549.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.73 : 42,284.40 = 15,699.37 : x
  2. Step 2: Convert to fraction form
    28,188.73/42,284.40 = 15,699.37/x
  3. Step 3: Cross multiply
    28,188.73x = 42,284.40 × 15,699.37
  4. Step 4: Simplify right side
    28,188.73x = 663,838,440.83
  5. Step 5: Solve for x
    x = 663,838,440.83/28,188.73
  6. Step 6: Final answer
    x = 23,549.78

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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.