Home / 19,161.02-28,742.88-5,121.02

Finding the Fourth Proportional to 19,161.02, 28,742.88 and 5,121.02

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Solution

The fourth proportional to 19,161.02, 28,742.88 and 5,121.02 is: 7,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.02 : 28,742.88 = 5,121.02 : x
  2. Step 2: Convert to fraction form
    19,161.02/28,742.88 = 5,121.02/x
  3. Step 3: Cross multiply
    19,161.02x = 28,742.88 × 5,121.02
  4. Step 4: Simplify right side
    19,161.02x = 147,192,863.34
  5. Step 5: Solve for x
    x = 147,192,863.34/19,161.02
  6. Step 6: Final answer
    x = 7,681.89

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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.