Home / 15,715.90-23,574.16-12,581.36

Finding the Fourth Proportional to 15,715.90, 23,574.16 and 12,581.36

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Solution

The fourth proportional to 15,715.90, 23,574.16 and 12,581.36 is: 18,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.90 : 23,574.16 = 12,581.36 : x
  2. Step 2: Convert to fraction form
    15,715.90/23,574.16 = 12,581.36/x
  3. Step 3: Cross multiply
    15,715.90x = 23,574.16 × 12,581.36
  4. Step 4: Simplify right side
    15,715.90x = 296,594,993.66
  5. Step 5: Solve for x
    x = 296,594,993.66/15,715.90
  6. Step 6: Final answer
    x = 18,872.29

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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.