Home / 13,743.09-18,947.52-13,557.18

Finding the Fourth Proportional to 13,743.09, 18,947.52 and 13,557.18

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Solution

The fourth proportional to 13,743.09, 18,947.52 and 13,557.18 is: 18,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.09 : 18,947.52 = 13,557.18 : x
  2. Step 2: Convert to fraction form
    13,743.09/18,947.52 = 13,557.18/x
  3. Step 3: Cross multiply
    13,743.09x = 18,947.52 × 13,557.18
  4. Step 4: Simplify right side
    13,743.09x = 256,874,939.19
  5. Step 5: Solve for x
    x = 256,874,939.19/13,743.09
  6. Step 6: Final answer
    x = 18,691.21

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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.