Home / 10,306.60-15,459.90-5,122.60

Finding the Fourth Proportional to 10,306.60, 15,459.90 and 5,122.60

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Solution

The fourth proportional to 10,306.60, 15,459.90 and 5,122.60 is: 7,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,306.60 : 15,459.90 = 5,122.60 : x
  2. Step 2: Convert to fraction form
    10,306.60/15,459.90 = 5,122.60/x
  3. Step 3: Cross multiply
    10,306.60x = 15,459.90 × 5,122.60
  4. Step 4: Simplify right side
    10,306.60x = 79,194,883.74
  5. Step 5: Solve for x
    x = 79,194,883.74/10,306.60
  6. Step 6: Final answer
    x = 7,683.90

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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.