Home / 27,785.72-38,344.34-15,848.76

Finding the Fourth Proportional to 27,785.72, 38,344.34 and 15,848.76

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Solution

The fourth proportional to 27,785.72, 38,344.34 and 15,848.76 is: 21,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.72 : 38,344.34 = 15,848.76 : x
  2. Step 2: Convert to fraction form
    27,785.72/38,344.34 = 15,848.76/x
  3. Step 3: Cross multiply
    27,785.72x = 38,344.34 × 15,848.76
  4. Step 4: Simplify right side
    27,785.72x = 607,710,242.02
  5. Step 5: Solve for x
    x = 607,710,242.02/27,785.72
  6. Step 6: Final answer
    x = 21,871.32

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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.