Home / 16,990.55-23,447.12-9,915.61

Finding the Fourth Proportional to 16,990.55, 23,447.12 and 9,915.61

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Solution

The fourth proportional to 16,990.55, 23,447.12 and 9,915.61 is: 13,683.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.55 : 23,447.12 = 9,915.61 : x
  2. Step 2: Convert to fraction form
    16,990.55/23,447.12 = 9,915.61/x
  3. Step 3: Cross multiply
    16,990.55x = 23,447.12 × 9,915.61
  4. Step 4: Simplify right side
    16,990.55x = 232,492,330.73
  5. Step 5: Solve for x
    x = 232,492,330.73/16,990.55
  6. Step 6: Final answer
    x = 13,683.63

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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.