Home / 12,319.42-16,997.90-9,140.06

Finding the Fourth Proportional to 12,319.42, 16,997.90 and 9,140.06

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Solution

The fourth proportional to 12,319.42, 16,997.90 and 9,140.06 is: 12,611.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.42 : 16,997.90 = 9,140.06 : x
  2. Step 2: Convert to fraction form
    12,319.42/16,997.90 = 9,140.06/x
  3. Step 3: Cross multiply
    12,319.42x = 16,997.90 × 9,140.06
  4. Step 4: Simplify right side
    12,319.42x = 155,361,825.87
  5. Step 5: Solve for x
    x = 155,361,825.87/12,319.42
  6. Step 6: Final answer
    x = 12,611.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.