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Finding the Fourth Proportional to 10,641.48, 14,685.86 and 6,393.84

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Solution

The fourth proportional to 10,641.48, 14,685.86 and 6,393.84 is: 8,823.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.48 : 14,685.86 = 6,393.84 : x
  2. Step 2: Convert to fraction form
    10,641.48/14,685.86 = 6,393.84/x
  3. Step 3: Cross multiply
    10,641.48x = 14,685.86 × 6,393.84
  4. Step 4: Simplify right side
    10,641.48x = 93,899,039.10
  5. Step 5: Solve for x
    x = 93,899,039.10/10,641.48
  6. Step 6: Final answer
    x = 8,823.87

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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.