Home / 19,005.79-28,508.70-5,154.79

Finding the Fourth Proportional to 19,005.79, 28,508.70 and 5,154.79

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Solution

The fourth proportional to 19,005.79, 28,508.70 and 5,154.79 is: 7,732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.79 : 28,508.70 = 5,154.79 : x
  2. Step 2: Convert to fraction form
    19,005.79/28,508.70 = 5,154.79/x
  3. Step 3: Cross multiply
    19,005.79x = 28,508.70 × 5,154.79
  4. Step 4: Simplify right side
    19,005.79x = 146,956,361.67
  5. Step 5: Solve for x
    x = 146,956,361.67/19,005.79
  6. Step 6: Final answer
    x = 7,732.19

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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.