Home / 20,693.13-28,556.51-11,261.76

Finding the Fourth Proportional to 20,693.13, 28,556.51 and 11,261.76

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Solution

The fourth proportional to 20,693.13, 28,556.51 and 11,261.76 is: 15,541.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.13 : 28,556.51 = 11,261.76 : x
  2. Step 2: Convert to fraction form
    20,693.13/28,556.51 = 11,261.76/x
  3. Step 3: Cross multiply
    20,693.13x = 28,556.51 × 11,261.76
  4. Step 4: Simplify right side
    20,693.13x = 321,596,562.06
  5. Step 5: Solve for x
    x = 321,596,562.06/20,693.13
  6. Step 6: Final answer
    x = 15,541.22

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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.