Home / 12,909.90-19,347.84-9,982.56

Finding the Fourth Proportional to 12,909.90, 19,347.84 and 9,982.56

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Solution

The fourth proportional to 12,909.90, 19,347.84 and 9,982.56 is: 14,960.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.90 : 19,347.84 = 9,982.56 : x
  2. Step 2: Convert to fraction form
    12,909.90/19,347.84 = 9,982.56/x
  3. Step 3: Cross multiply
    12,909.90x = 19,347.84 × 9,982.56
  4. Step 4: Simplify right side
    12,909.90x = 193,140,973.67
  5. Step 5: Solve for x
    x = 193,140,973.67/12,909.90
  6. Step 6: Final answer
    x = 14,960.69

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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.