Home / 20,298.79-30,448.19-7,148.04

Finding the Fourth Proportional to 20,298.79, 30,448.19 and 7,148.04

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Solution

The fourth proportional to 20,298.79, 30,448.19 and 7,148.04 is: 10,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.79 : 30,448.19 = 7,148.04 : x
  2. Step 2: Convert to fraction form
    20,298.79/30,448.19 = 7,148.04/x
  3. Step 3: Cross multiply
    20,298.79x = 30,448.19 × 7,148.04
  4. Step 4: Simplify right side
    20,298.79x = 217,644,880.05
  5. Step 5: Solve for x
    x = 217,644,880.05/20,298.79
  6. Step 6: Final answer
    x = 10,722.06

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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.