Home / 9,136.15-13,708.46-4,971.20

Finding the Fourth Proportional to 9,136.15, 13,708.46 and 4,971.20

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Solution

The fourth proportional to 9,136.15, 13,708.46 and 4,971.20 is: 7,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.15 : 13,708.46 = 4,971.20 : x
  2. Step 2: Convert to fraction form
    9,136.15/13,708.46 = 4,971.20/x
  3. Step 3: Cross multiply
    9,136.15x = 13,708.46 × 4,971.20
  4. Step 4: Simplify right side
    9,136.15x = 68,147,402.95
  5. Step 5: Solve for x
    x = 68,147,402.95/9,136.15
  6. Step 6: Final answer
    x = 7,459.10

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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.