Home / 20,502.18-28,288.02-11,549.67

Finding the Fourth Proportional to 20,502.18, 28,288.02 and 11,549.67

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Solution

The fourth proportional to 20,502.18, 28,288.02 and 11,549.67 is: 15,935.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.18 : 28,288.02 = 11,549.67 : x
  2. Step 2: Convert to fraction form
    20,502.18/28,288.02 = 11,549.67/x
  3. Step 3: Cross multiply
    20,502.18x = 28,288.02 × 11,549.67
  4. Step 4: Simplify right side
    20,502.18x = 326,717,295.95
  5. Step 5: Solve for x
    x = 326,717,295.95/20,502.18
  6. Step 6: Final answer
    x = 15,935.73

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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.