Home / 18,750.40-28,131.24-5,603.20

Finding the Fourth Proportional to 18,750.40, 28,131.24 and 5,603.20

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Solution

The fourth proportional to 18,750.40, 28,131.24 and 5,603.20 is: 8,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.40 : 28,131.24 = 5,603.20 : x
  2. Step 2: Convert to fraction form
    18,750.40/28,131.24 = 5,603.20/x
  3. Step 3: Cross multiply
    18,750.40x = 28,131.24 × 5,603.20
  4. Step 4: Simplify right side
    18,750.40x = 157,624,963.97
  5. Step 5: Solve for x
    x = 157,624,963.97/18,750.40
  6. Step 6: Final answer
    x = 8,406.49

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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.