Home / 18,754.40-28,137.24-5,607.20

Finding the Fourth Proportional to 18,754.40, 28,137.24 and 5,607.20

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Solution

The fourth proportional to 18,754.40, 28,137.24 and 5,607.20 is: 8,412.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.40 : 28,137.24 = 5,607.20 : x
  2. Step 2: Convert to fraction form
    18,754.40/28,137.24 = 5,607.20/x
  3. Step 3: Cross multiply
    18,754.40x = 28,137.24 × 5,607.20
  4. Step 4: Simplify right side
    18,754.40x = 157,771,132.13
  5. Step 5: Solve for x
    x = 157,771,132.13/18,754.40
  6. Step 6: Final answer
    x = 8,412.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.