Home / 13,152.80-19,729.20-12,077.60

Finding the Fourth Proportional to 13,152.80, 19,729.20 and 12,077.60

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Solution

The fourth proportional to 13,152.80, 19,729.20 and 12,077.60 is: 18,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.80 : 19,729.20 = 12,077.60 : x
  2. Step 2: Convert to fraction form
    13,152.80/19,729.20 = 12,077.60/x
  3. Step 3: Cross multiply
    13,152.80x = 19,729.20 × 12,077.60
  4. Step 4: Simplify right side
    13,152.80x = 238,281,385.92
  5. Step 5: Solve for x
    x = 238,281,385.92/13,152.80
  6. Step 6: Final answer
    x = 18,116.40

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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.