Home / 20,435.04-30,649.32-5,641.20

Finding the Fourth Proportional to 20,435.04, 30,649.32 and 5,641.20

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Solution

The fourth proportional to 20,435.04, 30,649.32 and 5,641.20 is: 8,460.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.04 : 30,649.32 = 5,641.20 : x
  2. Step 2: Convert to fraction form
    20,435.04/30,649.32 = 5,641.20/x
  3. Step 3: Cross multiply
    20,435.04x = 30,649.32 × 5,641.20
  4. Step 4: Simplify right side
    20,435.04x = 172,898,943.98
  5. Step 5: Solve for x
    x = 172,898,943.98/20,435.04
  6. Step 6: Final answer
    x = 8,460.91

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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.