Home / 14,272.40-21,397.98-6,869.90

Finding the Fourth Proportional to 14,272.40, 21,397.98 and 6,869.90

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Solution

The fourth proportional to 14,272.40, 21,397.98 and 6,869.90 is: 10,299.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.40 : 21,397.98 = 6,869.90 : x
  2. Step 2: Convert to fraction form
    14,272.40/21,397.98 = 6,869.90/x
  3. Step 3: Cross multiply
    14,272.40x = 21,397.98 × 6,869.90
  4. Step 4: Simplify right side
    14,272.40x = 147,001,982.80
  5. Step 5: Solve for x
    x = 147,001,982.80/14,272.40
  6. Step 6: Final answer
    x = 10,299.74

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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.