Home / 13,452.05-20,178.59-6,870.55

Finding the Fourth Proportional to 13,452.05, 20,178.59 and 6,870.55

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Solution

The fourth proportional to 13,452.05, 20,178.59 and 6,870.55 is: 10,306.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,452.05 : 20,178.59 = 6,870.55 : x
  2. Step 2: Convert to fraction form
    13,452.05/20,178.59 = 6,870.55/x
  3. Step 3: Cross multiply
    13,452.05x = 20,178.59 × 6,870.55
  4. Step 4: Simplify right side
    13,452.05x = 138,638,011.52
  5. Step 5: Solve for x
    x = 138,638,011.52/13,452.05
  6. Step 6: Final answer
    x = 10,306.09

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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.