Home / 20,902.79-28,847.72-11,473.18

Finding the Fourth Proportional to 20,902.79, 28,847.72 and 11,473.18

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Solution

The fourth proportional to 20,902.79, 28,847.72 and 11,473.18 is: 15,834.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.79 : 28,847.72 = 11,473.18 : x
  2. Step 2: Convert to fraction form
    20,902.79/28,847.72 = 11,473.18/x
  3. Step 3: Cross multiply
    20,902.79x = 28,847.72 × 11,473.18
  4. Step 4: Simplify right side
    20,902.79x = 330,975,040.71
  5. Step 5: Solve for x
    x = 330,975,040.71/20,902.79
  6. Step 6: Final answer
    x = 15,834.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.