Home / 13,909.74-19,195.08-7,777.50

Finding the Fourth Proportional to 13,909.74, 19,195.08 and 7,777.50

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Solution

The fourth proportional to 13,909.74, 19,195.08 and 7,777.50 is: 10,732.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.74 : 19,195.08 = 7,777.50 : x
  2. Step 2: Convert to fraction form
    13,909.74/19,195.08 = 7,777.50/x
  3. Step 3: Cross multiply
    13,909.74x = 19,195.08 × 7,777.50
  4. Step 4: Simplify right side
    13,909.74x = 149,289,734.70
  5. Step 5: Solve for x
    x = 149,289,734.70/13,909.74
  6. Step 6: Final answer
    x = 10,732.75

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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.