Home / 19,806.56-29,692.38-9,931.76

Finding the Fourth Proportional to 19,806.56, 29,692.38 and 9,931.76

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Solution

The fourth proportional to 19,806.56, 29,692.38 and 9,931.76 is: 14,888.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,806.56 : 29,692.38 = 9,931.76 : x
  2. Step 2: Convert to fraction form
    19,806.56/29,692.38 = 9,931.76/x
  3. Step 3: Cross multiply
    19,806.56x = 29,692.38 × 9,931.76
  4. Step 4: Simplify right side
    19,806.56x = 294,897,591.99
  5. Step 5: Solve for x
    x = 294,897,591.99/19,806.56
  6. Step 6: Final answer
    x = 14,888.88

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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.