Home / 13,386.17-18,473.61-7,418.51

Finding the Fourth Proportional to 13,386.17, 18,473.61 and 7,418.51

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Solution

The fourth proportional to 13,386.17, 18,473.61 and 7,418.51 is: 10,237.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.17 : 18,473.61 = 7,418.51 : x
  2. Step 2: Convert to fraction form
    13,386.17/18,473.61 = 7,418.51/x
  3. Step 3: Cross multiply
    13,386.17x = 18,473.61 × 7,418.51
  4. Step 4: Simplify right side
    13,386.17x = 137,046,660.52
  5. Step 5: Solve for x
    x = 137,046,660.52/13,386.17
  6. Step 6: Final answer
    x = 10,237.93

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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.