Home / 19,207.72-28,744.62-13,290.76

Finding the Fourth Proportional to 19,207.72, 28,744.62 and 13,290.76

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Solution

The fourth proportional to 19,207.72, 28,744.62 and 13,290.76 is: 19,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.72 : 28,744.62 = 13,290.76 : x
  2. Step 2: Convert to fraction form
    19,207.72/28,744.62 = 13,290.76/x
  3. Step 3: Cross multiply
    19,207.72x = 28,744.62 × 13,290.76
  4. Step 4: Simplify right side
    19,207.72x = 382,037,845.71
  5. Step 5: Solve for x
    x = 382,037,845.71/19,207.72
  6. Step 6: Final answer
    x = 19,889.81

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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.