Home / 13,386.69-18,473.13-7,418.21

Finding the Fourth Proportional to 13,386.69, 18,473.13 and 7,418.21

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Solution

The fourth proportional to 13,386.69, 18,473.13 and 7,418.21 is: 10,236.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.69 : 18,473.13 = 7,418.21 : x
  2. Step 2: Convert to fraction form
    13,386.69/18,473.13 = 7,418.21/x
  3. Step 3: Cross multiply
    13,386.69x = 18,473.13 × 7,418.21
  4. Step 4: Simplify right side
    13,386.69x = 137,037,465.33
  5. Step 5: Solve for x
    x = 137,037,465.33/13,386.69
  6. Step 6: Final answer
    x = 10,236.84

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Double scale
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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.