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Finding the Fourth Proportional to 27,885.53, 38,479.65 and 15,946.94

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Solution

The fourth proportional to 27,885.53, 38,479.65 and 15,946.94 is: 22,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,885.53 : 38,479.65 = 15,946.94 : x
  2. Step 2: Convert to fraction form
    27,885.53/38,479.65 = 15,946.94/x
  3. Step 3: Cross multiply
    27,885.53x = 38,479.65 × 15,946.94
  4. Step 4: Simplify right side
    27,885.53x = 613,632,669.77
  5. Step 5: Solve for x
    x = 613,632,669.77/27,885.53
  6. Step 6: Final answer
    x = 22,005.42

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Similar ratio
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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.