Home / 28,206.40-42,309.60-21,864.10

Finding the Fourth Proportional to 28,206.40, 42,309.60 and 21,864.10

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Solution

The fourth proportional to 28,206.40, 42,309.60 and 21,864.10 is: 32,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.40 : 42,309.60 = 21,864.10 : x
  2. Step 2: Convert to fraction form
    28,206.40/42,309.60 = 21,864.10/x
  3. Step 3: Cross multiply
    28,206.40x = 42,309.60 × 21,864.10
  4. Step 4: Simplify right side
    28,206.40x = 925,061,325.36
  5. Step 5: Solve for x
    x = 925,061,325.36/28,206.40
  6. Step 6: Final answer
    x = 32,796.15

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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.