Home / 21,559.37-29,757.18-20,320.07

Finding the Fourth Proportional to 21,559.37, 29,757.18 and 20,320.07

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Solution

The fourth proportional to 21,559.37, 29,757.18 and 20,320.07 is: 28,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.37 : 29,757.18 = 20,320.07 : x
  2. Step 2: Convert to fraction form
    21,559.37/29,757.18 = 20,320.07/x
  3. Step 3: Cross multiply
    21,559.37x = 29,757.18 × 20,320.07
  4. Step 4: Simplify right side
    21,559.37x = 604,667,831.82
  5. Step 5: Solve for x
    x = 604,667,831.82/21,559.37
  6. Step 6: Final answer
    x = 28,046.64

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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.