Home / 13,275.80-18,320.88-7,308.04

Finding the Fourth Proportional to 13,275.80, 18,320.88 and 7,308.04

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Solution

The fourth proportional to 13,275.80, 18,320.88 and 7,308.04 is: 10,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.80 : 18,320.88 = 7,308.04 : x
  2. Step 2: Convert to fraction form
    13,275.80/18,320.88 = 7,308.04/x
  3. Step 3: Cross multiply
    13,275.80x = 18,320.88 × 7,308.04
  4. Step 4: Simplify right side
    13,275.80x = 133,889,723.88
  5. Step 5: Solve for x
    x = 133,889,723.88/13,275.80
  6. Step 6: Final answer
    x = 10,085.25

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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.