Home / 14,289.32-19,718.25-7,915.44

Finding the Fourth Proportional to 14,289.32, 19,718.25 and 7,915.44

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Solution

The fourth proportional to 14,289.32, 19,718.25 and 7,915.44 is: 10,922.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.32 : 19,718.25 = 7,915.44 : x
  2. Step 2: Convert to fraction form
    14,289.32/19,718.25 = 7,915.44/x
  3. Step 3: Cross multiply
    14,289.32x = 19,718.25 × 7,915.44
  4. Step 4: Simplify right side
    14,289.32x = 156,078,624.78
  5. Step 5: Solve for x
    x = 156,078,624.78/14,289.32
  6. Step 6: Final answer
    x = 10,922.75

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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.