Home / 20,374.24-30,543.12-12,957.88

Finding the Fourth Proportional to 20,374.24, 30,543.12 and 12,957.88

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Solution

The fourth proportional to 20,374.24, 30,543.12 and 12,957.88 is: 19,425.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.24 : 30,543.12 = 12,957.88 : x
  2. Step 2: Convert to fraction form
    20,374.24/30,543.12 = 12,957.88/x
  3. Step 3: Cross multiply
    20,374.24x = 30,543.12 × 12,957.88
  4. Step 4: Simplify right side
    20,374.24x = 395,774,083.79
  5. Step 5: Solve for x
    x = 395,774,083.79/20,374.24
  6. Step 6: Final answer
    x = 19,425.22

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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.