Home / 42,909.21-64,363.82-13,327.31

Finding the Fourth Proportional to 42,909.21, 64,363.82 and 13,327.31

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Solution

The fourth proportional to 42,909.21, 64,363.82 and 13,327.31 is: 19,990.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909.21 : 64,363.82 = 13,327.31 : x
  2. Step 2: Convert to fraction form
    42,909.21/64,363.82 = 13,327.31/x
  3. Step 3: Cross multiply
    42,909.21x = 64,363.82 × 13,327.31
  4. Step 4: Simplify right side
    42,909.21x = 857,796,193.47
  5. Step 5: Solve for x
    x = 857,796,193.47/42,909.21
  6. Step 6: Final answer
    x = 19,990.96

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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.