Home / 40,421.22-60,643.80-20,713.62

Finding the Fourth Proportional to 40,421.22, 60,643.80 and 20,713.62

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Solution

The fourth proportional to 40,421.22, 60,643.80 and 20,713.62 is: 31,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,421.22 : 60,643.80 = 20,713.62 : x
  2. Step 2: Convert to fraction form
    40,421.22/60,643.80 = 20,713.62/x
  3. Step 3: Cross multiply
    40,421.22x = 60,643.80 × 20,713.62
  4. Step 4: Simplify right side
    40,421.22x = 1,256,152,628.56
  5. Step 5: Solve for x
    x = 1,256,152,628.56/40,421.22
  6. Step 6: Final answer
    x = 31,076.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.