Home / 40,148.31-55,402.81-21,998.94

Finding the Fourth Proportional to 40,148.31, 55,402.81 and 21,998.94

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Solution

The fourth proportional to 40,148.31, 55,402.81 and 21,998.94 is: 30,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,148.31 : 55,402.81 = 21,998.94 : x
  2. Step 2: Convert to fraction form
    40,148.31/55,402.81 = 21,998.94/x
  3. Step 3: Cross multiply
    40,148.31x = 55,402.81 × 21,998.94
  4. Step 4: Simplify right side
    40,148.31x = 1,218,803,093.02
  5. Step 5: Solve for x
    x = 1,218,803,093.02/40,148.31
  6. Step 6: Final answer
    x = 30,357.52

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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.