Home / 18,881.19-28,303.31-7,797.22

Finding the Fourth Proportional to 18,881.19, 28,303.31 and 7,797.22

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Solution

The fourth proportional to 18,881.19, 28,303.31 and 7,797.22 is: 11,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.19 : 28,303.31 = 7,797.22 : x
  2. Step 2: Convert to fraction form
    18,881.19/28,303.31 = 7,797.22/x
  3. Step 3: Cross multiply
    18,881.19x = 28,303.31 × 7,797.22
  4. Step 4: Simplify right side
    18,881.19x = 220,687,083.53
  5. Step 5: Solve for x
    x = 220,687,083.53/18,881.19
  6. Step 6: Final answer
    x = 11,688.20

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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.