Home / 14,984.20-20,685.70-9,320.78

Finding the Fourth Proportional to 14,984.20, 20,685.70 and 9,320.78

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Solution

The fourth proportional to 14,984.20, 20,685.70 and 9,320.78 is: 12,867.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,984.20 : 20,685.70 = 9,320.78 : x
  2. Step 2: Convert to fraction form
    14,984.20/20,685.70 = 9,320.78/x
  3. Step 3: Cross multiply
    14,984.20x = 20,685.70 × 9,320.78
  4. Step 4: Simplify right side
    14,984.20x = 192,806,858.85
  5. Step 5: Solve for x
    x = 192,806,858.85/14,984.20
  6. Step 6: Final answer
    x = 12,867.34

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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.