Home / 13,294.54-18,347.70-7,989.22

Finding the Fourth Proportional to 13,294.54, 18,347.70 and 7,989.22

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Solution

The fourth proportional to 13,294.54, 18,347.70 and 7,989.22 is: 11,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,294.54 : 18,347.70 = 7,989.22 : x
  2. Step 2: Convert to fraction form
    13,294.54/18,347.70 = 7,989.22/x
  3. Step 3: Cross multiply
    13,294.54x = 18,347.70 × 7,989.22
  4. Step 4: Simplify right side
    13,294.54x = 146,583,811.79
  5. Step 5: Solve for x
    x = 146,583,811.79/13,294.54
  6. Step 6: Final answer
    x = 11,025.87

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1.5x scale

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.