Home / 15,137.23-20,855.31-11,354.53

Finding the Fourth Proportional to 15,137.23, 20,855.31 and 11,354.53

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Solution

The fourth proportional to 15,137.23, 20,855.31 and 11,354.53 is: 15,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.23 : 20,855.31 = 11,354.53 : x
  2. Step 2: Convert to fraction form
    15,137.23/20,855.31 = 11,354.53/x
  3. Step 3: Cross multiply
    15,137.23x = 20,855.31 × 11,354.53
  4. Step 4: Simplify right side
    15,137.23x = 236,802,243.05
  5. Step 5: Solve for x
    x = 236,802,243.05/15,137.23
  6. Step 6: Final answer
    x = 15,643.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.