Home / 43,008.40-64,496.18-20,515.10

Finding the Fourth Proportional to 43,008.40, 64,496.18 and 20,515.10

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Solution

The fourth proportional to 43,008.40, 64,496.18 and 20,515.10 is: 30,764.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,008.40 : 64,496.18 = 20,515.10 : x
  2. Step 2: Convert to fraction form
    43,008.40/64,496.18 = 20,515.10/x
  3. Step 3: Cross multiply
    43,008.40x = 64,496.18 × 20,515.10
  4. Step 4: Simplify right side
    43,008.40x = 1,323,145,582.32
  5. Step 5: Solve for x
    x = 1,323,145,582.32/43,008.40
  6. Step 6: Final answer
    x = 30,764.82

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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.