Home / 19,719.60-29,574.27-7,872.90

Finding the Fourth Proportional to 19,719.60, 29,574.27 and 7,872.90

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Solution

The fourth proportional to 19,719.60, 29,574.27 and 7,872.90 is: 11,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.60 : 29,574.27 = 7,872.90 : x
  2. Step 2: Convert to fraction form
    19,719.60/29,574.27 = 7,872.90/x
  3. Step 3: Cross multiply
    19,719.60x = 29,574.27 × 7,872.90
  4. Step 4: Simplify right side
    19,719.60x = 232,835,270.28
  5. Step 5: Solve for x
    x = 232,835,270.28/19,719.60
  6. Step 6: Final answer
    x = 11,807.30

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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.