Home / 27,778.71-38,334.72-15,031.89

Finding the Fourth Proportional to 27,778.71, 38,334.72 and 15,031.89

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Solution

The fourth proportional to 27,778.71, 38,334.72 and 15,031.89 is: 20,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.71 : 38,334.72 = 15,031.89 : x
  2. Step 2: Convert to fraction form
    27,778.71/38,334.72 = 15,031.89/x
  3. Step 3: Cross multiply
    27,778.71x = 38,334.72 × 15,031.89
  4. Step 4: Simplify right side
    27,778.71x = 576,243,427.64
  5. Step 5: Solve for x
    x = 576,243,427.64/27,778.71
  6. Step 6: Final answer
    x = 20,744.07

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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.