Home / 20,331.61-28,056.38-11,377.67

Finding the Fourth Proportional to 20,331.61, 28,056.38 and 11,377.67

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Solution

The fourth proportional to 20,331.61, 28,056.38 and 11,377.67 is: 15,700.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.61 : 28,056.38 = 11,377.67 : x
  2. Step 2: Convert to fraction form
    20,331.61/28,056.38 = 11,377.67/x
  3. Step 3: Cross multiply
    20,331.61x = 28,056.38 × 11,377.67
  4. Step 4: Simplify right side
    20,331.61x = 319,216,035.86
  5. Step 5: Solve for x
    x = 319,216,035.86/20,331.61
  6. Step 6: Final answer
    x = 15,700.48

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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.