Home / 27,847.61-38,426.16-15,911.72

Finding the Fourth Proportional to 27,847.61, 38,426.16 and 15,911.72

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Solution

The fourth proportional to 27,847.61, 38,426.16 and 15,911.72 is: 21,956.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,847.61 : 38,426.16 = 15,911.72 : x
  2. Step 2: Convert to fraction form
    27,847.61/38,426.16 = 15,911.72/x
  3. Step 3: Cross multiply
    27,847.61x = 38,426.16 × 15,911.72
  4. Step 4: Simplify right side
    27,847.61x = 611,426,026.91
  5. Step 5: Solve for x
    x = 611,426,026.91/27,847.61
  6. Step 6: Final answer
    x = 21,956.14

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Half scale
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Double scale
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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.