Home / 15,683.40-23,531.85-9,115.20

Finding the Fourth Proportional to 15,683.40, 23,531.85 and 9,115.20

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Solution

The fourth proportional to 15,683.40, 23,531.85 and 9,115.20 is: 13,676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.40 : 23,531.85 = 9,115.20 : x
  2. Step 2: Convert to fraction form
    15,683.40/23,531.85 = 9,115.20/x
  3. Step 3: Cross multiply
    15,683.40x = 23,531.85 × 9,115.20
  4. Step 4: Simplify right side
    15,683.40x = 214,497,519.12
  5. Step 5: Solve for x
    x = 214,497,519.12/15,683.40
  6. Step 6: Final answer
    x = 13,676.72

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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.