Home / 13,357.13-18,432.81-7,388.64

Finding the Fourth Proportional to 13,357.13, 18,432.81 and 7,388.64

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Solution

The fourth proportional to 13,357.13, 18,432.81 and 7,388.64 is: 10,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.13 : 18,432.81 = 7,388.64 : x
  2. Step 2: Convert to fraction form
    13,357.13/18,432.81 = 7,388.64/x
  3. Step 3: Cross multiply
    13,357.13x = 18,432.81 × 7,388.64
  4. Step 4: Simplify right side
    13,357.13x = 136,193,397.28
  5. Step 5: Solve for x
    x = 136,193,397.28/13,357.13
  6. Step 6: Final answer
    x = 10,196.31

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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.