Home / 10,378.80-14,307.84-6,397.20

Finding the Fourth Proportional to 10,378.80, 14,307.84 and 6,397.20

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Solution

The fourth proportional to 10,378.80, 14,307.84 and 6,397.20 is: 8,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.80 : 14,307.84 = 6,397.20 : x
  2. Step 2: Convert to fraction form
    10,378.80/14,307.84 = 6,397.20/x
  3. Step 3: Cross multiply
    10,378.80x = 14,307.84 × 6,397.20
  4. Step 4: Simplify right side
    10,378.80x = 91,530,114.05
  5. Step 5: Solve for x
    x = 91,530,114.05/10,378.80
  6. Step 6: Final answer
    x = 8,818.95

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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.