Home / 13,397.40-18,488.16-7,347.66

Finding the Fourth Proportional to 13,397.40, 18,488.16 and 7,347.66

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Solution

The fourth proportional to 13,397.40, 18,488.16 and 7,347.66 is: 10,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.40 : 18,488.16 = 7,347.66 : x
  2. Step 2: Convert to fraction form
    13,397.40/18,488.16 = 7,347.66/x
  3. Step 3: Cross multiply
    13,397.40x = 18,488.16 × 7,347.66
  4. Step 4: Simplify right side
    13,397.40x = 135,844,713.71
  5. Step 5: Solve for x
    x = 135,844,713.71/13,397.40
  6. Step 6: Final answer
    x = 10,139.63

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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.