Home / 19,631.69-29,448.20-7,787.71

Finding the Fourth Proportional to 19,631.69, 29,448.20 and 7,787.71

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Solution

The fourth proportional to 19,631.69, 29,448.20 and 7,787.71 is: 11,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,631.69 : 29,448.20 = 7,787.71 : x
  2. Step 2: Convert to fraction form
    19,631.69/29,448.20 = 7,787.71/x
  3. Step 3: Cross multiply
    19,631.69x = 29,448.20 × 7,787.71
  4. Step 4: Simplify right side
    19,631.69x = 229,334,041.62
  5. Step 5: Solve for x
    x = 229,334,041.62/19,631.69
  6. Step 6: Final answer
    x = 11,681.83

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1.5x scale

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.