Home / 20,339.50-28,048.80-15,861.62

Finding the Fourth Proportional to 20,339.50, 28,048.80 and 15,861.62

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Solution

The fourth proportional to 20,339.50, 28,048.80 and 15,861.62 is: 21,873.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.50 : 28,048.80 = 15,861.62 : x
  2. Step 2: Convert to fraction form
    20,339.50/28,048.80 = 15,861.62/x
  3. Step 3: Cross multiply
    20,339.50x = 28,048.80 × 15,861.62
  4. Step 4: Simplify right side
    20,339.50x = 444,899,407.06
  5. Step 5: Solve for x
    x = 444,899,407.06/20,339.50
  6. Step 6: Final answer
    x = 21,873.66

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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.