Home / 14,487.72-21,717-5,719.20

Finding the Fourth Proportional to 14,487.72, 21,717 and 5,719.20

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Solution

The fourth proportional to 14,487.72, 21,717 and 5,719.20 is: 8,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.72 : 21,717 = 5,719.20 : x
  2. Step 2: Convert to fraction form
    14,487.72/21,717 = 5,719.20/x
  3. Step 3: Cross multiply
    14,487.72x = 21,717 × 5,719.20
  4. Step 4: Simplify right side
    14,487.72x = 124,203,866.40
  5. Step 5: Solve for x
    x = 124,203,866.40/14,487.72
  6. Step 6: Final answer
    x = 8,573.04

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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.