Home / 20,976.20-28,948.70-12,026.51

Finding the Fourth Proportional to 20,976.20, 28,948.70 and 12,026.51

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Solution

The fourth proportional to 20,976.20, 28,948.70 and 12,026.51 is: 16,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.20 : 28,948.70 = 12,026.51 : x
  2. Step 2: Convert to fraction form
    20,976.20/28,948.70 = 12,026.51/x
  3. Step 3: Cross multiply
    20,976.20x = 28,948.70 × 12,026.51
  4. Step 4: Simplify right side
    20,976.20x = 348,151,769.90
  5. Step 5: Solve for x
    x = 348,151,769.90/20,976.20
  6. Step 6: Final answer
    x = 16,597.47

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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.