Home / 20,908.60-31,362.90-7,057.40

Finding the Fourth Proportional to 20,908.60, 31,362.90 and 7,057.40

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Solution

The fourth proportional to 20,908.60, 31,362.90 and 7,057.40 is: 10,586.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.60 : 31,362.90 = 7,057.40 : x
  2. Step 2: Convert to fraction form
    20,908.60/31,362.90 = 7,057.40/x
  3. Step 3: Cross multiply
    20,908.60x = 31,362.90 × 7,057.40
  4. Step 4: Simplify right side
    20,908.60x = 221,340,530.46
  5. Step 5: Solve for x
    x = 221,340,530.46/20,908.60
  6. Step 6: Final answer
    x = 10,586.10

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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.