Home / 13,152.40-19,728.60-8,486.80

Finding the Fourth Proportional to 13,152.40, 19,728.60 and 8,486.80

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Solution

The fourth proportional to 13,152.40, 19,728.60 and 8,486.80 is: 12,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.40 : 19,728.60 = 8,486.80 : x
  2. Step 2: Convert to fraction form
    13,152.40/19,728.60 = 8,486.80/x
  3. Step 3: Cross multiply
    13,152.40x = 19,728.60 × 8,486.80
  4. Step 4: Simplify right side
    13,152.40x = 167,432,682.48
  5. Step 5: Solve for x
    x = 167,432,682.48/13,152.40
  6. Step 6: Final answer
    x = 12,730.20

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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.