Home / 34,426.88-47,505.60-20,991.68

Finding the Fourth Proportional to 34,426.88, 47,505.60 and 20,991.68

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Solution

The fourth proportional to 34,426.88, 47,505.60 and 20,991.68 is: 28,966.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,426.88 : 47,505.60 = 20,991.68 : x
  2. Step 2: Convert to fraction form
    34,426.88/47,505.60 = 20,991.68/x
  3. Step 3: Cross multiply
    34,426.88x = 47,505.60 × 20,991.68
  4. Step 4: Simplify right side
    34,426.88x = 997,222,353.41
  5. Step 5: Solve for x
    x = 997,222,353.41/34,426.88
  6. Step 6: Final answer
    x = 28,966.39

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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.