Home / 13,087.02-18,060.18-7,118.88

Finding the Fourth Proportional to 13,087.02, 18,060.18 and 7,118.88

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Solution

The fourth proportional to 13,087.02, 18,060.18 and 7,118.88 is: 9,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.02 : 18,060.18 = 7,118.88 : x
  2. Step 2: Convert to fraction form
    13,087.02/18,060.18 = 7,118.88/x
  3. Step 3: Cross multiply
    13,087.02x = 18,060.18 × 7,118.88
  4. Step 4: Simplify right side
    13,087.02x = 128,568,254.20
  5. Step 5: Solve for x
    x = 128,568,254.20/13,087.02
  6. Step 6: Final answer
    x = 9,824.10

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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.