Home / 11,256.80-16,885.20-8,632.40

Finding the Fourth Proportional to 11,256.80, 16,885.20 and 8,632.40

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Solution

The fourth proportional to 11,256.80, 16,885.20 and 8,632.40 is: 12,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,256.80 : 16,885.20 = 8,632.40 : x
  2. Step 2: Convert to fraction form
    11,256.80/16,885.20 = 8,632.40/x
  3. Step 3: Cross multiply
    11,256.80x = 16,885.20 × 8,632.40
  4. Step 4: Simplify right side
    11,256.80x = 145,759,800.48
  5. Step 5: Solve for x
    x = 145,759,800.48/11,256.80
  6. Step 6: Final answer
    x = 12,948.60

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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.