Home / 20,200.79-30,308.47-7,055.10

Finding the Fourth Proportional to 20,200.79, 30,308.47 and 7,055.10

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Solution

The fourth proportional to 20,200.79, 30,308.47 and 7,055.10 is: 10,585.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.79 : 30,308.47 = 7,055.10 : x
  2. Step 2: Convert to fraction form
    20,200.79/30,308.47 = 7,055.10/x
  3. Step 3: Cross multiply
    20,200.79x = 30,308.47 × 7,055.10
  4. Step 4: Simplify right side
    20,200.79x = 213,829,286.70
  5. Step 5: Solve for x
    x = 213,829,286.70/20,200.79
  6. Step 6: Final answer
    x = 10,585.19

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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.