Home / 28,386.56-42,580.16-10,857.28

Finding the Fourth Proportional to 28,386.56, 42,580.16 and 10,857.28

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Solution

The fourth proportional to 28,386.56, 42,580.16 and 10,857.28 is: 16,286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.56 : 42,580.16 = 10,857.28 : x
  2. Step 2: Convert to fraction form
    28,386.56/42,580.16 = 10,857.28/x
  3. Step 3: Cross multiply
    28,386.56x = 42,580.16 × 10,857.28
  4. Step 4: Simplify right side
    28,386.56x = 462,304,719.56
  5. Step 5: Solve for x
    x = 462,304,719.56/28,386.56
  6. Step 6: Final answer
    x = 16,286.04

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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.