Home / 19,828.28-29,742.47-6,689.87

Finding the Fourth Proportional to 19,828.28, 29,742.47 and 6,689.87

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Solution

The fourth proportional to 19,828.28, 29,742.47 and 6,689.87 is: 10,034.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,828.28 : 29,742.47 = 6,689.87 : x
  2. Step 2: Convert to fraction form
    19,828.28/29,742.47 = 6,689.87/x
  3. Step 3: Cross multiply
    19,828.28x = 29,742.47 × 6,689.87
  4. Step 4: Simplify right side
    19,828.28x = 198,973,075.62
  5. Step 5: Solve for x
    x = 198,973,075.62/19,828.28
  6. Step 6: Final answer
    x = 10,034.82

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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.