Home / 14,440.67-21,672.35-7,420.40

Finding the Fourth Proportional to 14,440.67, 21,672.35 and 7,420.40

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Solution

The fourth proportional to 14,440.67, 21,672.35 and 7,420.40 is: 11,136.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,440.67 : 21,672.35 = 7,420.40 : x
  2. Step 2: Convert to fraction form
    14,440.67/21,672.35 = 7,420.40/x
  3. Step 3: Cross multiply
    14,440.67x = 21,672.35 × 7,420.40
  4. Step 4: Simplify right side
    14,440.67x = 160,817,505.94
  5. Step 5: Solve for x
    x = 160,817,505.94/14,440.67
  6. Step 6: Final answer
    x = 11,136.43

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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.