Home / 14,788.61-20,387.09-9,119.55

Finding the Fourth Proportional to 14,788.61, 20,387.09 and 9,119.55

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Solution

The fourth proportional to 14,788.61, 20,387.09 and 9,119.55 is: 12,571.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,788.61 : 20,387.09 = 9,119.55 : x
  2. Step 2: Convert to fraction form
    14,788.61/20,387.09 = 9,119.55/x
  3. Step 3: Cross multiply
    14,788.61x = 20,387.09 × 9,119.55
  4. Step 4: Simplify right side
    14,788.61x = 185,921,134.56
  5. Step 5: Solve for x
    x = 185,921,134.56/14,788.61
  6. Step 6: Final answer
    x = 12,571.91

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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.