Home / 13,398.17-18,488.26-7,429.82

Finding the Fourth Proportional to 13,398.17, 18,488.26 and 7,429.82

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Solution

The fourth proportional to 13,398.17, 18,488.26 and 7,429.82 is: 10,252.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.17 : 18,488.26 = 7,429.82 : x
  2. Step 2: Convert to fraction form
    13,398.17/18,488.26 = 7,429.82/x
  3. Step 3: Cross multiply
    13,398.17x = 18,488.26 × 7,429.82
  4. Step 4: Simplify right side
    13,398.17x = 137,364,430.09
  5. Step 5: Solve for x
    x = 137,364,430.09/13,398.17
  6. Step 6: Final answer
    x = 10,252.48

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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.