Home / 28,275.67-42,397.35-11,622

Finding the Fourth Proportional to 28,275.67, 42,397.35 and 11,622

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Solution

The fourth proportional to 28,275.67, 42,397.35 and 11,622 is: 17,426.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.67 : 42,397.35 = 11,622 : x
  2. Step 2: Convert to fraction form
    28,275.67/42,397.35 = 11,622/x
  3. Step 3: Cross multiply
    28,275.67x = 42,397.35 × 11,622
  4. Step 4: Simplify right side
    28,275.67x = 492,742,001.70
  5. Step 5: Solve for x
    x = 492,742,001.70/28,275.67
  6. Step 6: Final answer
    x = 17,426.36

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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.