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Finding the Fourth Proportional to 27,581.81, 38,061.81 and 15,647.46

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Solution

The fourth proportional to 27,581.81, 38,061.81 and 15,647.46 is: 21,592.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,581.81 : 38,061.81 = 15,647.46 : x
  2. Step 2: Convert to fraction form
    27,581.81/38,061.81 = 15,647.46/x
  3. Step 3: Cross multiply
    27,581.81x = 38,061.81 × 15,647.46
  4. Step 4: Simplify right side
    27,581.81x = 595,570,649.50
  5. Step 5: Solve for x
    x = 595,570,649.50/27,581.81
  6. Step 6: Final answer
    x = 21,592.88

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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.