Home / 19,428.24-29,156.40-7,734.72

Finding the Fourth Proportional to 19,428.24, 29,156.40 and 7,734.72

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Solution

The fourth proportional to 19,428.24, 29,156.40 and 7,734.72 is: 11,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.24 : 29,156.40 = 7,734.72 : x
  2. Step 2: Convert to fraction form
    19,428.24/29,156.40 = 7,734.72/x
  3. Step 3: Cross multiply
    19,428.24x = 29,156.40 × 7,734.72
  4. Step 4: Simplify right side
    19,428.24x = 225,516,590.21
  5. Step 5: Solve for x
    x = 225,516,590.21/19,428.24
  6. Step 6: Final answer
    x = 11,607.67

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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.