Home / 20,870.49-31,305.80-6,079.77

Finding the Fourth Proportional to 20,870.49, 31,305.80 and 6,079.77

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Solution

The fourth proportional to 20,870.49, 31,305.80 and 6,079.77 is: 9,119.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.49 : 31,305.80 = 6,079.77 : x
  2. Step 2: Convert to fraction form
    20,870.49/31,305.80 = 6,079.77/x
  3. Step 3: Cross multiply
    20,870.49x = 31,305.80 × 6,079.77
  4. Step 4: Simplify right side
    20,870.49x = 190,332,033.27
  5. Step 5: Solve for x
    x = 190,332,033.27/20,870.49
  6. Step 6: Final answer
    x = 9,119.67

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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.