Home / 13,156.19-18,155.81-7,188.24

Finding the Fourth Proportional to 13,156.19, 18,155.81 and 7,188.24

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Solution

The fourth proportional to 13,156.19, 18,155.81 and 7,188.24 is: 9,919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.19 : 18,155.81 = 7,188.24 : x
  2. Step 2: Convert to fraction form
    13,156.19/18,155.81 = 7,188.24/x
  3. Step 3: Cross multiply
    13,156.19x = 18,155.81 × 7,188.24
  4. Step 4: Simplify right side
    13,156.19x = 130,508,283.73
  5. Step 5: Solve for x
    x = 130,508,283.73/13,156.19
  6. Step 6: Final answer
    x = 9,919.92

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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.