Home / 28,657.54-42,925.70-18,122.12

Finding the Fourth Proportional to 28,657.54, 42,925.70 and 18,122.12

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Solution

The fourth proportional to 28,657.54, 42,925.70 and 18,122.12 is: 27,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.54 : 42,925.70 = 18,122.12 : x
  2. Step 2: Convert to fraction form
    28,657.54/42,925.70 = 18,122.12/x
  3. Step 3: Cross multiply
    28,657.54x = 42,925.70 × 18,122.12
  4. Step 4: Simplify right side
    28,657.54x = 777,904,712.11
  5. Step 5: Solve for x
    x = 777,904,712.11/28,657.54
  6. Step 6: Final answer
    x = 27,144.86

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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.