Home / 27,856.88-38,443.10-15,281.63

Finding the Fourth Proportional to 27,856.88, 38,443.10 and 15,281.63

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Solution

The fourth proportional to 27,856.88, 38,443.10 and 15,281.63 is: 21,088.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,856.88 : 38,443.10 = 15,281.63 : x
  2. Step 2: Convert to fraction form
    27,856.88/38,443.10 = 15,281.63/x
  3. Step 3: Cross multiply
    27,856.88x = 38,443.10 × 15,281.63
  4. Step 4: Simplify right side
    27,856.88x = 587,472,961.63
  5. Step 5: Solve for x
    x = 587,472,961.63/27,856.88
  6. Step 6: Final answer
    x = 21,088.98

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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.