Home / 39,903.18-55,066.76-21,998.82

Finding the Fourth Proportional to 39,903.18, 55,066.76 and 21,998.82

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Solution

The fourth proportional to 39,903.18, 55,066.76 and 21,998.82 is: 30,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.18 : 55,066.76 = 21,998.82 : x
  2. Step 2: Convert to fraction form
    39,903.18/55,066.76 = 21,998.82/x
  3. Step 3: Cross multiply
    39,903.18x = 55,066.76 × 21,998.82
  4. Step 4: Simplify right side
    39,903.18x = 1,211,403,741.22
  5. Step 5: Solve for x
    x = 1,211,403,741.22/39,903.18
  6. Step 6: Final answer
    x = 30,358.58

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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.