Home / 27,909.79-38,515.35-15,162.87

Finding the Fourth Proportional to 27,909.79, 38,515.35 and 15,162.87

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Solution

The fourth proportional to 27,909.79, 38,515.35 and 15,162.87 is: 20,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,909.79 : 38,515.35 = 15,162.87 : x
  2. Step 2: Convert to fraction form
    27,909.79/38,515.35 = 15,162.87/x
  3. Step 3: Cross multiply
    27,909.79x = 38,515.35 × 15,162.87
  4. Step 4: Simplify right side
    27,909.79x = 584,003,245.05
  5. Step 5: Solve for x
    x = 584,003,245.05/27,909.79
  6. Step 6: Final answer
    x = 20,924.67

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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.