Home / 14,228.20-21,342.30-13,421.80

Finding the Fourth Proportional to 14,228.20, 21,342.30 and 13,421.80

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Solution

The fourth proportional to 14,228.20, 21,342.30 and 13,421.80 is: 20,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,228.20 : 21,342.30 = 13,421.80 : x
  2. Step 2: Convert to fraction form
    14,228.20/21,342.30 = 13,421.80/x
  3. Step 3: Cross multiply
    14,228.20x = 21,342.30 × 13,421.80
  4. Step 4: Simplify right side
    14,228.20x = 286,452,082.14
  5. Step 5: Solve for x
    x = 286,452,082.14/14,228.20
  6. Step 6: Final answer
    x = 20,132.70

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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.