Home / 20,434.65-30,653.75-5,643.58

Finding the Fourth Proportional to 20,434.65, 30,653.75 and 5,643.58

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Solution

The fourth proportional to 20,434.65, 30,653.75 and 5,643.58 is: 8,465.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.65 : 30,653.75 = 5,643.58 : x
  2. Step 2: Convert to fraction form
    20,434.65/30,653.75 = 5,643.58/x
  3. Step 3: Cross multiply
    20,434.65x = 30,653.75 × 5,643.58
  4. Step 4: Simplify right side
    20,434.65x = 172,996,890.43
  5. Step 5: Solve for x
    x = 172,996,890.43/20,434.65
  6. Step 6: Final answer
    x = 8,465.86

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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.