Home / 20,435.70-28,202.10-11,483.18

Finding the Fourth Proportional to 20,435.70, 28,202.10 and 11,483.18

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Solution

The fourth proportional to 20,435.70, 28,202.10 and 11,483.18 is: 15,847.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.70 : 28,202.10 = 11,483.18 : x
  2. Step 2: Convert to fraction form
    20,435.70/28,202.10 = 11,483.18/x
  3. Step 3: Cross multiply
    20,435.70x = 28,202.10 × 11,483.18
  4. Step 4: Simplify right side
    20,435.70x = 323,849,649.67
  5. Step 5: Solve for x
    x = 323,849,649.67/20,435.70
  6. Step 6: Final answer
    x = 15,847.25

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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.