Home / 40,148.43-55,402.99-21,999.06

Finding the Fourth Proportional to 40,148.43, 55,402.99 and 21,999.06

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Solution

The fourth proportional to 40,148.43, 55,402.99 and 21,999.06 is: 30,357.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,148.43 : 55,402.99 = 21,999.06 : x
  2. Step 2: Convert to fraction form
    40,148.43/55,402.99 = 21,999.06/x
  3. Step 3: Cross multiply
    40,148.43x = 55,402.99 × 21,999.06
  4. Step 4: Simplify right side
    40,148.43x = 1,218,813,646.19
  5. Step 5: Solve for x
    x = 1,218,813,646.19/40,148.43
  6. Step 6: Final answer
    x = 30,357.69

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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.