Home / 15,454.40-23,149.20-8,520.80

Finding the Fourth Proportional to 15,454.40, 23,149.20 and 8,520.80

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Solution

The fourth proportional to 15,454.40, 23,149.20 and 8,520.80 is: 12,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.40 : 23,149.20 = 8,520.80 : x
  2. Step 2: Convert to fraction form
    15,454.40/23,149.20 = 8,520.80/x
  3. Step 3: Cross multiply
    15,454.40x = 23,149.20 × 8,520.80
  4. Step 4: Simplify right side
    15,454.40x = 197,249,703.36
  5. Step 5: Solve for x
    x = 197,249,703.36/15,454.40
  6. Step 6: Final answer
    x = 12,763.34

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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.