Home / 21,535.07-29,727.51-20,189.93

Finding the Fourth Proportional to 21,535.07, 29,727.51 and 20,189.93

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Solution

The fourth proportional to 21,535.07, 29,727.51 and 20,189.93 is: 27,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.07 : 29,727.51 = 20,189.93 : x
  2. Step 2: Convert to fraction form
    21,535.07/29,727.51 = 20,189.93/x
  3. Step 3: Cross multiply
    21,535.07x = 29,727.51 × 20,189.93
  4. Step 4: Simplify right side
    21,535.07x = 600,196,345.97
  5. Step 5: Solve for x
    x = 600,196,345.97/21,535.07
  6. Step 6: Final answer
    x = 27,870.65

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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.