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Finding the Fourth Proportional to 15,129.94, 22,674.06 and 7,718.91

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Solution

The fourth proportional to 15,129.94, 22,674.06 and 7,718.91 is: 11,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.94 : 22,674.06 = 7,718.91 : x
  2. Step 2: Convert to fraction form
    15,129.94/22,674.06 = 7,718.91/x
  3. Step 3: Cross multiply
    15,129.94x = 22,674.06 × 7,718.91
  4. Step 4: Simplify right side
    15,129.94x = 175,019,151.38
  5. Step 5: Solve for x
    x = 175,019,151.38/15,129.94
  6. Step 6: Final answer
    x = 11,567.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.