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Finding the Fourth Proportional to 10,803.78, 14,909.67 and 6,326.91

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Solution

The fourth proportional to 10,803.78, 14,909.67 and 6,326.91 is: 8,731.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,803.78 : 14,909.67 = 6,326.91 : x
  2. Step 2: Convert to fraction form
    10,803.78/14,909.67 = 6,326.91/x
  3. Step 3: Cross multiply
    10,803.78x = 14,909.67 × 6,326.91
  4. Step 4: Simplify right side
    10,803.78x = 94,332,140.22
  5. Step 5: Solve for x
    x = 94,332,140.22/10,803.78
  6. Step 6: Final answer
    x = 8,731.40

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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.