Home / 13,156.92-18,156.81-7,188.84

Finding the Fourth Proportional to 13,156.92, 18,156.81 and 7,188.84

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Solution

The fourth proportional to 13,156.92, 18,156.81 and 7,188.84 is: 9,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.92 : 18,156.81 = 7,188.84 : x
  2. Step 2: Convert to fraction form
    13,156.92/18,156.81 = 7,188.84/x
  3. Step 3: Cross multiply
    13,156.92x = 18,156.81 × 7,188.84
  4. Step 4: Simplify right side
    13,156.92x = 130,526,402.00
  5. Step 5: Solve for x
    x = 130,526,402.00/13,156.92
  6. Step 6: Final answer
    x = 9,920.74

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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.