Home / 22,181.65-30,440.31-20,929.59

Finding the Fourth Proportional to 22,181.65, 30,440.31 and 20,929.59

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Solution

The fourth proportional to 22,181.65, 30,440.31 and 20,929.59 is: 28,722.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,181.65 : 30,440.31 = 20,929.59 : x
  2. Step 2: Convert to fraction form
    22,181.65/30,440.31 = 20,929.59/x
  3. Step 3: Cross multiply
    22,181.65x = 30,440.31 × 20,929.59
  4. Step 4: Simplify right side
    22,181.65x = 637,103,129.29
  5. Step 5: Solve for x
    x = 637,103,129.29/22,181.65
  6. Step 6: Final answer
    x = 28,722.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.