Home / 20,549.24-28,357.93-11,117.81

Finding the Fourth Proportional to 20,549.24, 28,357.93 and 11,117.81

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Solution

The fourth proportional to 20,549.24, 28,357.93 and 11,117.81 is: 15,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.24 : 28,357.93 = 11,117.81 : x
  2. Step 2: Convert to fraction form
    20,549.24/28,357.93 = 11,117.81/x
  3. Step 3: Cross multiply
    20,549.24x = 28,357.93 × 11,117.81
  4. Step 4: Simplify right side
    20,549.24x = 315,277,908.15
  5. Step 5: Solve for x
    x = 315,277,908.15/20,549.24
  6. Step 6: Final answer
    x = 15,342.56

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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.