Home / 13,288.50-19,945.05-6,719.30

Finding the Fourth Proportional to 13,288.50, 19,945.05 and 6,719.30

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Solution

The fourth proportional to 13,288.50, 19,945.05 and 6,719.30 is: 10,085.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.50 : 19,945.05 = 6,719.30 : x
  2. Step 2: Convert to fraction form
    13,288.50/19,945.05 = 6,719.30/x
  3. Step 3: Cross multiply
    13,288.50x = 19,945.05 × 6,719.30
  4. Step 4: Simplify right side
    13,288.50x = 134,016,774.47
  5. Step 5: Solve for x
    x = 134,016,774.47/13,288.50
  6. Step 6: Final answer
    x = 10,085.17

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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.