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Finding the Fourth Proportional to 9,718.74, 14,502.29 and 8,671.54

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Solution

The fourth proportional to 9,718.74, 14,502.29 and 8,671.54 is: 12,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,718.74 : 14,502.29 = 8,671.54 : x
  2. Step 2: Convert to fraction form
    9,718.74/14,502.29 = 8,671.54/x
  3. Step 3: Cross multiply
    9,718.74x = 14,502.29 × 8,671.54
  4. Step 4: Simplify right side
    9,718.74x = 125,757,187.83
  5. Step 5: Solve for x
    x = 125,757,187.83/9,718.74
  6. Step 6: Final answer
    x = 12,939.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.