Home / 13,235.88-19,770.45-9,931.56

Finding the Fourth Proportional to 13,235.88, 19,770.45 and 9,931.56

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Solution

The fourth proportional to 13,235.88, 19,770.45 and 9,931.56 is: 14,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.88 : 19,770.45 = 9,931.56 : x
  2. Step 2: Convert to fraction form
    13,235.88/19,770.45 = 9,931.56/x
  3. Step 3: Cross multiply
    13,235.88x = 19,770.45 × 9,931.56
  4. Step 4: Simplify right side
    13,235.88x = 196,351,410.40
  5. Step 5: Solve for x
    x = 196,351,410.40/13,235.88
  6. Step 6: Final answer
    x = 14,834.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.