Home / 13,087.76-18,060.64-7,119.20

Finding the Fourth Proportional to 13,087.76, 18,060.64 and 7,119.20

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Solution

The fourth proportional to 13,087.76, 18,060.64 and 7,119.20 is: 9,824.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.76 : 18,060.64 = 7,119.20 : x
  2. Step 2: Convert to fraction form
    13,087.76/18,060.64 = 7,119.20/x
  3. Step 3: Cross multiply
    13,087.76x = 18,060.64 × 7,119.20
  4. Step 4: Simplify right side
    13,087.76x = 128,577,308.29
  5. Step 5: Solve for x
    x = 128,577,308.29/13,087.76
  6. Step 6: Final answer
    x = 9,824.24

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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.