Home / 13,398.06-18,489.52-7,348.88

Finding the Fourth Proportional to 13,398.06, 18,489.52 and 7,348.88

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Solution

The fourth proportional to 13,398.06, 18,489.52 and 7,348.88 is: 10,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.06 : 18,489.52 = 7,348.88 : x
  2. Step 2: Convert to fraction form
    13,398.06/18,489.52 = 7,348.88/x
  3. Step 3: Cross multiply
    13,398.06x = 18,489.52 × 7,348.88
  4. Step 4: Simplify right side
    13,398.06x = 135,877,263.74
  5. Step 5: Solve for x
    x = 135,877,263.74/13,398.06
  6. Step 6: Final answer
    x = 10,141.56

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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.