Home / 28,157.96-42,248.74-12,354.84

Finding the Fourth Proportional to 28,157.96, 42,248.74 and 12,354.84

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Solution

The fourth proportional to 28,157.96, 42,248.74 and 12,354.84 is: 18,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.96 : 42,248.74 = 12,354.84 : x
  2. Step 2: Convert to fraction form
    28,157.96/42,248.74 = 12,354.84/x
  3. Step 3: Cross multiply
    28,157.96x = 42,248.74 × 12,354.84
  4. Step 4: Simplify right side
    28,157.96x = 521,976,422.90
  5. Step 5: Solve for x
    x = 521,976,422.90/28,157.96
  6. Step 6: Final answer
    x = 18,537.44

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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.