Home / 13,134.80-19,702.20-8,987.60

Finding the Fourth Proportional to 13,134.80, 19,702.20 and 8,987.60

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Solution

The fourth proportional to 13,134.80, 19,702.20 and 8,987.60 is: 13,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.80 : 19,702.20 = 8,987.60 : x
  2. Step 2: Convert to fraction form
    13,134.80/19,702.20 = 8,987.60/x
  3. Step 3: Cross multiply
    13,134.80x = 19,702.20 × 8,987.60
  4. Step 4: Simplify right side
    13,134.80x = 177,075,492.72
  5. Step 5: Solve for x
    x = 177,075,492.72/13,134.80
  6. Step 6: Final answer
    x = 13,481.40

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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.