Home / 28,023.03-38,674.50-20,937.15

Finding the Fourth Proportional to 28,023.03, 38,674.50 and 20,937.15

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Solution

The fourth proportional to 28,023.03, 38,674.50 and 20,937.15 is: 28,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.03 : 38,674.50 = 20,937.15 : x
  2. Step 2: Convert to fraction form
    28,023.03/38,674.50 = 20,937.15/x
  3. Step 3: Cross multiply
    28,023.03x = 38,674.50 × 20,937.15
  4. Step 4: Simplify right side
    28,023.03x = 809,733,807.68
  5. Step 5: Solve for x
    x = 809,733,807.68/28,023.03
  6. Step 6: Final answer
    x = 28,895.30

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Half scale
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Double scale
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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.