Home / 39,903.93-55,066.41-21,998.52

Finding the Fourth Proportional to 39,903.93, 55,066.41 and 21,998.52

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Solution

The fourth proportional to 39,903.93, 55,066.41 and 21,998.52 is: 30,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.93 : 55,066.41 = 21,998.52 : x
  2. Step 2: Convert to fraction form
    39,903.93/55,066.41 = 21,998.52/x
  3. Step 3: Cross multiply
    39,903.93x = 55,066.41 × 21,998.52
  4. Step 4: Simplify right side
    39,903.93x = 1,211,379,521.71
  5. Step 5: Solve for x
    x = 1,211,379,521.71/39,903.93
  6. Step 6: Final answer
    x = 30,357.40

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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.