Home / 13,320.06-18,382.28-7,656.64

Finding the Fourth Proportional to 13,320.06, 18,382.28 and 7,656.64

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Solution

The fourth proportional to 13,320.06, 18,382.28 and 7,656.64 is: 10,566.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.06 : 18,382.28 = 7,656.64 : x
  2. Step 2: Convert to fraction form
    13,320.06/18,382.28 = 7,656.64/x
  3. Step 3: Cross multiply
    13,320.06x = 18,382.28 × 7,656.64
  4. Step 4: Simplify right side
    13,320.06x = 140,746,500.34
  5. Step 5: Solve for x
    x = 140,746,500.34/13,320.06
  6. Step 6: Final answer
    x = 10,566.51

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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.