Home / 12,939.45-17,856.59-7,273.87

Finding the Fourth Proportional to 12,939.45, 17,856.59 and 7,273.87

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Solution

The fourth proportional to 12,939.45, 17,856.59 and 7,273.87 is: 10,038.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.45 : 17,856.59 = 7,273.87 : x
  2. Step 2: Convert to fraction form
    12,939.45/17,856.59 = 7,273.87/x
  3. Step 3: Cross multiply
    12,939.45x = 17,856.59 × 7,273.87
  4. Step 4: Simplify right side
    12,939.45x = 129,886,433.29
  5. Step 5: Solve for x
    x = 129,886,433.29/12,939.45
  6. Step 6: Final answer
    x = 10,038.02

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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.