Home / 20,623.62-28,460.59-11,192.18

Finding the Fourth Proportional to 20,623.62, 28,460.59 and 11,192.18

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Solution

The fourth proportional to 20,623.62, 28,460.59 and 11,192.18 is: 15,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.62 : 28,460.59 = 11,192.18 : x
  2. Step 2: Convert to fraction form
    20,623.62/28,460.59 = 11,192.18/x
  3. Step 3: Cross multiply
    20,623.62x = 28,460.59 × 11,192.18
  4. Step 4: Simplify right side
    20,623.62x = 318,536,046.19
  5. Step 5: Solve for x
    x = 318,536,046.19/20,623.62
  6. Step 6: Final answer
    x = 15,445.21

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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.