Home / 28,248.20-42,372.30-7,188.20

Finding the Fourth Proportional to 28,248.20, 42,372.30 and 7,188.20

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Solution

The fourth proportional to 28,248.20, 42,372.30 and 7,188.20 is: 10,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,248.20 : 42,372.30 = 7,188.20 : x
  2. Step 2: Convert to fraction form
    28,248.20/42,372.30 = 7,188.20/x
  3. Step 3: Cross multiply
    28,248.20x = 42,372.30 × 7,188.20
  4. Step 4: Simplify right side
    28,248.20x = 304,580,566.86
  5. Step 5: Solve for x
    x = 304,580,566.86/28,248.20
  6. Step 6: Final answer
    x = 10,782.30

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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.