Home / 18,742.41-28,113.89-12,457.53

Finding the Fourth Proportional to 18,742.41, 28,113.89 and 12,457.53

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Solution

The fourth proportional to 18,742.41, 28,113.89 and 12,457.53 is: 18,686.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.41 : 28,113.89 = 12,457.53 : x
  2. Step 2: Convert to fraction form
    18,742.41/28,113.89 = 12,457.53/x
  3. Step 3: Cross multiply
    18,742.41x = 28,113.89 × 12,457.53
  4. Step 4: Simplify right side
    18,742.41x = 350,229,565.80
  5. Step 5: Solve for x
    x = 350,229,565.80/18,742.41
  6. Step 6: Final answer
    x = 18,686.47

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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.