Home / 21,380.09-32,035.07-15,109.47

Finding the Fourth Proportional to 21,380.09, 32,035.07 and 15,109.47

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Solution

The fourth proportional to 21,380.09, 32,035.07 and 15,109.47 is: 22,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.09 : 32,035.07 = 15,109.47 : x
  2. Step 2: Convert to fraction form
    21,380.09/32,035.07 = 15,109.47/x
  3. Step 3: Cross multiply
    21,380.09x = 32,035.07 × 15,109.47
  4. Step 4: Simplify right side
    21,380.09x = 484,032,929.11
  5. Step 5: Solve for x
    x = 484,032,929.11/21,380.09
  6. Step 6: Final answer
    x = 22,639.42

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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.