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Finding the Fourth Proportional to 27,653.88, 38,162.29 and 15,078.63

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Solution

The fourth proportional to 27,653.88, 38,162.29 and 15,078.63 is: 20,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.88 : 38,162.29 = 15,078.63 : x
  2. Step 2: Convert to fraction form
    27,653.88/38,162.29 = 15,078.63/x
  3. Step 3: Cross multiply
    27,653.88x = 38,162.29 × 15,078.63
  4. Step 4: Simplify right side
    27,653.88x = 575,435,050.86
  5. Step 5: Solve for x
    x = 575,435,050.86/27,653.88
  6. Step 6: Final answer
    x = 20,808.47

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Half scale
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Double scale
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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.