Home / 13,398.12-18,488.70-7,348.41

Finding the Fourth Proportional to 13,398.12, 18,488.70 and 7,348.41

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Solution

The fourth proportional to 13,398.12, 18,488.70 and 7,348.41 is: 10,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.12 : 18,488.70 = 7,348.41 : x
  2. Step 2: Convert to fraction form
    13,398.12/18,488.70 = 7,348.41/x
  3. Step 3: Cross multiply
    13,398.12x = 18,488.70 × 7,348.41
  4. Step 4: Simplify right side
    13,398.12x = 135,862,547.97
  5. Step 5: Solve for x
    x = 135,862,547.97/13,398.12
  6. Step 6: Final answer
    x = 10,140.42

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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.