Home / 9,915.40-14,873.28-3,992.86

Finding the Fourth Proportional to 9,915.40, 14,873.28 and 3,992.86

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Solution

The fourth proportional to 9,915.40, 14,873.28 and 3,992.86 is: 5,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.40 : 14,873.28 = 3,992.86 : x
  2. Step 2: Convert to fraction form
    9,915.40/14,873.28 = 3,992.86/x
  3. Step 3: Cross multiply
    9,915.40x = 14,873.28 × 3,992.86
  4. Step 4: Simplify right side
    9,915.40x = 59,386,924.78
  5. Step 5: Solve for x
    x = 59,386,924.78/9,915.40
  6. Step 6: Final answer
    x = 5,989.36

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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.