Home / 20,810.81-31,215.30-6,019.40

Finding the Fourth Proportional to 20,810.81, 31,215.30 and 6,019.40

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Solution

The fourth proportional to 20,810.81, 31,215.30 and 6,019.40 is: 9,028.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.81 : 31,215.30 = 6,019.40 : x
  2. Step 2: Convert to fraction form
    20,810.81/31,215.30 = 6,019.40/x
  3. Step 3: Cross multiply
    20,810.81x = 31,215.30 × 6,019.40
  4. Step 4: Simplify right side
    20,810.81x = 187,897,220.74
  5. Step 5: Solve for x
    x = 187,897,220.74/20,810.81
  6. Step 6: Final answer
    x = 9,028.83

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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.