Home / 12,711.72-19,070.10-4,920.60

Finding the Fourth Proportional to 12,711.72, 19,070.10 and 4,920.60

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Solution

The fourth proportional to 12,711.72, 19,070.10 and 4,920.60 is: 7,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.72 : 19,070.10 = 4,920.60 : x
  2. Step 2: Convert to fraction form
    12,711.72/19,070.10 = 4,920.60/x
  3. Step 3: Cross multiply
    12,711.72x = 19,070.10 × 4,920.60
  4. Step 4: Simplify right side
    12,711.72x = 93,836,334.06
  5. Step 5: Solve for x
    x = 93,836,334.06/12,711.72
  6. Step 6: Final answer
    x = 7,381.88

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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.