Home / 19,869.93-29,812.59-8,768.79

Finding the Fourth Proportional to 19,869.93, 29,812.59 and 8,768.79

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Solution

The fourth proportional to 19,869.93, 29,812.59 and 8,768.79 is: 13,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.93 : 29,812.59 = 8,768.79 : x
  2. Step 2: Convert to fraction form
    19,869.93/29,812.59 = 8,768.79/x
  3. Step 3: Cross multiply
    19,869.93x = 29,812.59 × 8,768.79
  4. Step 4: Simplify right side
    19,869.93x = 261,420,341.07
  5. Step 5: Solve for x
    x = 261,420,341.07/19,869.93
  6. Step 6: Final answer
    x = 13,156.58

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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.