Home / 28,971.02-43,423.40-12,306.62

Finding the Fourth Proportional to 28,971.02, 43,423.40 and 12,306.62

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Solution

The fourth proportional to 28,971.02, 43,423.40 and 12,306.62 is: 18,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.02 : 43,423.40 = 12,306.62 : x
  2. Step 2: Convert to fraction form
    28,971.02/43,423.40 = 12,306.62/x
  3. Step 3: Cross multiply
    28,971.02x = 43,423.40 × 12,306.62
  4. Step 4: Simplify right side
    28,971.02x = 534,395,282.91
  5. Step 5: Solve for x
    x = 534,395,282.91/28,971.02
  6. Step 6: Final answer
    x = 18,445.86

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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.