Home / 31,302.18-43,210.53-18,724.50

Finding the Fourth Proportional to 31,302.18, 43,210.53 and 18,724.50

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Solution

The fourth proportional to 31,302.18, 43,210.53 and 18,724.50 is: 25,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,302.18 : 43,210.53 = 18,724.50 : x
  2. Step 2: Convert to fraction form
    31,302.18/43,210.53 = 18,724.50/x
  3. Step 3: Cross multiply
    31,302.18x = 43,210.53 × 18,724.50
  4. Step 4: Simplify right side
    31,302.18x = 809,095,568.99
  5. Step 5: Solve for x
    x = 809,095,568.99/31,302.18
  6. Step 6: Final answer
    x = 25,847.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.