Home / 28,085.65-42,116.77-11,434.38

Finding the Fourth Proportional to 28,085.65, 42,116.77 and 11,434.38

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Solution

The fourth proportional to 28,085.65, 42,116.77 and 11,434.38 is: 17,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.65 : 42,116.77 = 11,434.38 : x
  2. Step 2: Convert to fraction form
    28,085.65/42,116.77 = 11,434.38/x
  3. Step 3: Cross multiply
    28,085.65x = 42,116.77 × 11,434.38
  4. Step 4: Simplify right side
    28,085.65x = 481,579,008.91
  5. Step 5: Solve for x
    x = 481,579,008.91/28,085.65
  6. Step 6: Final answer
    x = 17,146.80

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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.