Home / 43,210.70-64,743.15-20,976.20

Finding the Fourth Proportional to 43,210.70, 64,743.15 and 20,976.20

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Solution

The fourth proportional to 43,210.70, 64,743.15 and 20,976.20 is: 31,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,210.70 : 64,743.15 = 20,976.20 : x
  2. Step 2: Convert to fraction form
    43,210.70/64,743.15 = 20,976.20/x
  3. Step 3: Cross multiply
    43,210.70x = 64,743.15 × 20,976.20
  4. Step 4: Simplify right side
    43,210.70x = 1,358,065,263.03
  5. Step 5: Solve for x
    x = 1,358,065,263.03/43,210.70
  6. Step 6: Final answer
    x = 31,428.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.