Home / 13,398.29-18,488.63-7,347.57

Finding the Fourth Proportional to 13,398.29, 18,488.63 and 7,347.57

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Solution

The fourth proportional to 13,398.29, 18,488.63 and 7,347.57 is: 10,139.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.29 : 18,488.63 = 7,347.57 : x
  2. Step 2: Convert to fraction form
    13,398.29/18,488.63 = 7,347.57/x
  3. Step 3: Cross multiply
    13,398.29x = 18,488.63 × 7,347.57
  4. Step 4: Simplify right side
    13,398.29x = 135,846,466.39
  5. Step 5: Solve for x
    x = 135,846,466.39/13,398.29
  6. Step 6: Final answer
    x = 10,139.09

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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.