Home / 40,148.04-55,402.47-21,998.70

Finding the Fourth Proportional to 40,148.04, 55,402.47 and 21,998.70

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Solution

The fourth proportional to 40,148.04, 55,402.47 and 21,998.70 is: 30,357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,148.04 : 55,402.47 = 21,998.70 : x
  2. Step 2: Convert to fraction form
    40,148.04/55,402.47 = 21,998.70/x
  3. Step 3: Cross multiply
    40,148.04x = 55,402.47 × 21,998.70
  4. Step 4: Simplify right side
    40,148.04x = 1,218,782,316.79
  5. Step 5: Solve for x
    x = 1,218,782,316.79/40,148.04
  6. Step 6: Final answer
    x = 30,357.21

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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.