Home / 20,341.13-28,070.46-11,388.62

Finding the Fourth Proportional to 20,341.13, 28,070.46 and 11,388.62

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Solution

The fourth proportional to 20,341.13, 28,070.46 and 11,388.62 is: 15,716.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.13 : 28,070.46 = 11,388.62 : x
  2. Step 2: Convert to fraction form
    20,341.13/28,070.46 = 11,388.62/x
  3. Step 3: Cross multiply
    20,341.13x = 28,070.46 × 11,388.62
  4. Step 4: Simplify right side
    20,341.13x = 319,683,872.34
  5. Step 5: Solve for x
    x = 319,683,872.34/20,341.13
  6. Step 6: Final answer
    x = 15,716.14

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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.