Home / 13,695.12-20,537.28-4,807.80

Finding the Fourth Proportional to 13,695.12, 20,537.28 and 4,807.80

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Solution

The fourth proportional to 13,695.12, 20,537.28 and 4,807.80 is: 7,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.12 : 20,537.28 = 4,807.80 : x
  2. Step 2: Convert to fraction form
    13,695.12/20,537.28 = 4,807.80/x
  3. Step 3: Cross multiply
    13,695.12x = 20,537.28 × 4,807.80
  4. Step 4: Simplify right side
    13,695.12x = 98,739,134.78
  5. Step 5: Solve for x
    x = 98,739,134.78/13,695.12
  6. Step 6: Final answer
    x = 7,209.80

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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.