Home / 19,322.28-28,935.90-9,429.66

Finding the Fourth Proportional to 19,322.28, 28,935.90 and 9,429.66

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Solution

The fourth proportional to 19,322.28, 28,935.90 and 9,429.66 is: 14,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,322.28 : 28,935.90 = 9,429.66 : x
  2. Step 2: Convert to fraction form
    19,322.28/28,935.90 = 9,429.66/x
  3. Step 3: Cross multiply
    19,322.28x = 28,935.90 × 9,429.66
  4. Step 4: Simplify right side
    19,322.28x = 272,855,698.79
  5. Step 5: Solve for x
    x = 272,855,698.79/19,322.28
  6. Step 6: Final answer
    x = 14,121.30

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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.