Home / 28,177.54-38,883.28-15,430.88

Finding the Fourth Proportional to 28,177.54, 38,883.28 and 15,430.88

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Solution

The fourth proportional to 28,177.54, 38,883.28 and 15,430.88 is: 21,293.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.54 : 38,883.28 = 15,430.88 : x
  2. Step 2: Convert to fraction form
    28,177.54/38,883.28 = 15,430.88/x
  3. Step 3: Cross multiply
    28,177.54x = 38,883.28 × 15,430.88
  4. Step 4: Simplify right side
    28,177.54x = 600,003,227.69
  5. Step 5: Solve for x
    x = 600,003,227.69/28,177.54
  6. Step 6: Final answer
    x = 21,293.67

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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.