Home / 12,498.18-18,750.90-5,915.28

Finding the Fourth Proportional to 12,498.18, 18,750.90 and 5,915.28

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Solution

The fourth proportional to 12,498.18, 18,750.90 and 5,915.28 is: 8,874.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.18 : 18,750.90 = 5,915.28 : x
  2. Step 2: Convert to fraction form
    12,498.18/18,750.90 = 5,915.28/x
  3. Step 3: Cross multiply
    12,498.18x = 18,750.90 × 5,915.28
  4. Step 4: Simplify right side
    12,498.18x = 110,916,823.75
  5. Step 5: Solve for x
    x = 110,916,823.75/12,498.18
  6. Step 6: Final answer
    x = 8,874.64

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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.