Home / 47,421.30-71,136-12,360.90

Finding the Fourth Proportional to 47,421.30, 71,136 and 12,360.90

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Solution

The fourth proportional to 47,421.30, 71,136 and 12,360.90 is: 18,542.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,421.30 : 71,136 = 12,360.90 : x
  2. Step 2: Convert to fraction form
    47,421.30/71,136 = 12,360.90/x
  3. Step 3: Cross multiply
    47,421.30x = 71,136 × 12,360.90
  4. Step 4: Simplify right side
    47,421.30x = 879,304,982.40
  5. Step 5: Solve for x
    x = 879,304,982.40/47,421.30
  6. Step 6: Final answer
    x = 18,542.41

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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.