Home / 19,695.20-29,515.80-12,653.60

Finding the Fourth Proportional to 19,695.20, 29,515.80 and 12,653.60

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Solution

The fourth proportional to 19,695.20, 29,515.80 and 12,653.60 is: 18,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,695.20 : 29,515.80 = 12,653.60 : x
  2. Step 2: Convert to fraction form
    19,695.20/29,515.80 = 12,653.60/x
  3. Step 3: Cross multiply
    19,695.20x = 29,515.80 × 12,653.60
  4. Step 4: Simplify right side
    19,695.20x = 373,481,126.88
  5. Step 5: Solve for x
    x = 373,481,126.88/19,695.20
  6. Step 6: Final answer
    x = 18,963.05

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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.