Home / 28,646.90-42,979.47-18,182.11

Finding the Fourth Proportional to 28,646.90, 42,979.47 and 18,182.11

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Solution

The fourth proportional to 28,646.90, 42,979.47 and 18,182.11 is: 27,278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.90 : 42,979.47 = 18,182.11 : x
  2. Step 2: Convert to fraction form
    28,646.90/42,979.47 = 18,182.11/x
  3. Step 3: Cross multiply
    28,646.90x = 42,979.47 × 18,182.11
  4. Step 4: Simplify right side
    28,646.90x = 781,457,145.47
  5. Step 5: Solve for x
    x = 781,457,145.47/28,646.90
  6. Step 6: Final answer
    x = 27,278.94

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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.