Home / 13,690.69-18,876.02-11,425.29

Finding the Fourth Proportional to 13,690.69, 18,876.02 and 11,425.29

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Solution

The fourth proportional to 13,690.69, 18,876.02 and 11,425.29 is: 15,752.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.69 : 18,876.02 = 11,425.29 : x
  2. Step 2: Convert to fraction form
    13,690.69/18,876.02 = 11,425.29/x
  3. Step 3: Cross multiply
    13,690.69x = 18,876.02 × 11,425.29
  4. Step 4: Simplify right side
    13,690.69x = 215,663,874.63
  5. Step 5: Solve for x
    x = 215,663,874.63/13,690.69
  6. Step 6: Final answer
    x = 15,752.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.