Home / 20,259.10-30,399.56-9,870.85

Finding the Fourth Proportional to 20,259.10, 30,399.56 and 9,870.85

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Solution

The fourth proportional to 20,259.10, 30,399.56 and 9,870.85 is: 14,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.10 : 30,399.56 = 9,870.85 : x
  2. Step 2: Convert to fraction form
    20,259.10/30,399.56 = 9,870.85/x
  3. Step 3: Cross multiply
    20,259.10x = 30,399.56 × 9,870.85
  4. Step 4: Simplify right side
    20,259.10x = 300,069,496.83
  5. Step 5: Solve for x
    x = 300,069,496.83/20,259.10
  6. Step 6: Final answer
    x = 14,811.59

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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.