Home / 13,449.69-18,559.15-7,480.40

Finding the Fourth Proportional to 13,449.69, 18,559.15 and 7,480.40

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Solution

The fourth proportional to 13,449.69, 18,559.15 and 7,480.40 is: 10,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.69 : 18,559.15 = 7,480.40 : x
  2. Step 2: Convert to fraction form
    13,449.69/18,559.15 = 7,480.40/x
  3. Step 3: Cross multiply
    13,449.69x = 18,559.15 × 7,480.40
  4. Step 4: Simplify right side
    13,449.69x = 138,829,865.66
  5. Step 5: Solve for x
    x = 138,829,865.66/13,449.69
  6. Step 6: Final answer
    x = 10,322.16

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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.