Home / 20,870.55-31,305.89-6,079.84

Finding the Fourth Proportional to 20,870.55, 31,305.89 and 6,079.84

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Solution

The fourth proportional to 20,870.55, 31,305.89 and 6,079.84 is: 9,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.55 : 31,305.89 = 6,079.84 : x
  2. Step 2: Convert to fraction form
    20,870.55/31,305.89 = 6,079.84/x
  3. Step 3: Cross multiply
    20,870.55x = 31,305.89 × 6,079.84
  4. Step 4: Simplify right side
    20,870.55x = 190,334,802.26
  5. Step 5: Solve for x
    x = 190,334,802.26/20,870.55
  6. Step 6: Final answer
    x = 9,119.78

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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.