Home / 18,936.60-28,445.40-11,545.08

Finding the Fourth Proportional to 18,936.60, 28,445.40 and 11,545.08

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Solution

The fourth proportional to 18,936.60, 28,445.40 and 11,545.08 is: 17,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.60 : 28,445.40 = 11,545.08 : x
  2. Step 2: Convert to fraction form
    18,936.60/28,445.40 = 11,545.08/x
  3. Step 3: Cross multiply
    18,936.60x = 28,445.40 × 11,545.08
  4. Step 4: Simplify right side
    18,936.60x = 328,404,418.63
  5. Step 5: Solve for x
    x = 328,404,418.63/18,936.60
  6. Step 6: Final answer
    x = 17,342.31

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1.5x scale

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.