Home / 19,872.96-29,810.40-10,518.72

Finding the Fourth Proportional to 19,872.96, 29,810.40 and 10,518.72

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Solution

The fourth proportional to 19,872.96, 29,810.40 and 10,518.72 is: 15,778.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.96 : 29,810.40 = 10,518.72 : x
  2. Step 2: Convert to fraction form
    19,872.96/29,810.40 = 10,518.72/x
  3. Step 3: Cross multiply
    19,872.96x = 29,810.40 × 10,518.72
  4. Step 4: Simplify right side
    19,872.96x = 313,567,250.69
  5. Step 5: Solve for x
    x = 313,567,250.69/19,872.96
  6. Step 6: Final answer
    x = 15,778.59

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1.5x scale

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.