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Finding the Fourth Proportional to 15,386.65, 23,079.98 and 4,857.74

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Solution

The fourth proportional to 15,386.65, 23,079.98 and 4,857.74 is: 7,286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.65 : 23,079.98 = 4,857.74 : x
  2. Step 2: Convert to fraction form
    15,386.65/23,079.98 = 4,857.74/x
  3. Step 3: Cross multiply
    15,386.65x = 23,079.98 × 4,857.74
  4. Step 4: Simplify right side
    15,386.65x = 112,116,484.35
  5. Step 5: Solve for x
    x = 112,116,484.35/15,386.65
  6. Step 6: Final answer
    x = 7,286.61

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Similar ratio
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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.