Home / 13,154.42-18,153.22-7,488.90

Finding the Fourth Proportional to 13,154.42, 18,153.22 and 7,488.90

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Solution

The fourth proportional to 13,154.42, 18,153.22 and 7,488.90 is: 10,334.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.42 : 18,153.22 = 7,488.90 : x
  2. Step 2: Convert to fraction form
    13,154.42/18,153.22 = 7,488.90/x
  3. Step 3: Cross multiply
    13,154.42x = 18,153.22 × 7,488.90
  4. Step 4: Simplify right side
    13,154.42x = 135,947,649.26
  5. Step 5: Solve for x
    x = 135,947,649.26/13,154.42
  6. Step 6: Final answer
    x = 10,334.75

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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.