Home / 13,510.53-18,642.30-7,542.20

Finding the Fourth Proportional to 13,510.53, 18,642.30 and 7,542.20

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Solution

The fourth proportional to 13,510.53, 18,642.30 and 7,542.20 is: 10,406.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.53 : 18,642.30 = 7,542.20 : x
  2. Step 2: Convert to fraction form
    13,510.53/18,642.30 = 7,542.20/x
  3. Step 3: Cross multiply
    13,510.53x = 18,642.30 × 7,542.20
  4. Step 4: Simplify right side
    13,510.53x = 140,603,910.94
  5. Step 5: Solve for x
    x = 140,603,910.94/13,510.53
  6. Step 6: Final answer
    x = 10,406.99

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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.