Home / 20,436.48-30,660.89-7,289.87

Finding the Fourth Proportional to 20,436.48, 30,660.89 and 7,289.87

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Solution

The fourth proportional to 20,436.48, 30,660.89 and 7,289.87 is: 10,937.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.48 : 30,660.89 = 7,289.87 : x
  2. Step 2: Convert to fraction form
    20,436.48/30,660.89 = 7,289.87/x
  3. Step 3: Cross multiply
    20,436.48x = 30,660.89 × 7,289.87
  4. Step 4: Simplify right side
    20,436.48x = 223,513,712.43
  5. Step 5: Solve for x
    x = 223,513,712.43/20,436.48
  6. Step 6: Final answer
    x = 10,937.00

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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.