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Finding the Fourth Proportional to 19,314.68, 28,977.48 and 7,472.07

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Solution

The fourth proportional to 19,314.68, 28,977.48 and 7,472.07 is: 11,210.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,314.68 : 28,977.48 = 7,472.07 : x
  2. Step 2: Convert to fraction form
    19,314.68/28,977.48 = 7,472.07/x
  3. Step 3: Cross multiply
    19,314.68x = 28,977.48 × 7,472.07
  4. Step 4: Simplify right side
    19,314.68x = 216,521,758.98
  5. Step 5: Solve for x
    x = 216,521,758.98/19,314.68
  6. Step 6: Final answer
    x = 11,210.22

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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.