Home / 20,623.76-28,460.64-11,192.12

Finding the Fourth Proportional to 20,623.76, 28,460.64 and 11,192.12

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Solution

The fourth proportional to 20,623.76, 28,460.64 and 11,192.12 is: 15,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.76 : 28,460.64 = 11,192.12 : x
  2. Step 2: Convert to fraction form
    20,623.76/28,460.64 = 11,192.12/x
  3. Step 3: Cross multiply
    20,623.76x = 28,460.64 × 11,192.12
  4. Step 4: Simplify right side
    20,623.76x = 318,534,898.16
  5. Step 5: Solve for x
    x = 318,534,898.16/20,623.76
  6. Step 6: Final answer
    x = 15,445.04

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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.