Home / 11,490.59-15,856.20-6,386.37

Finding the Fourth Proportional to 11,490.59, 15,856.20 and 6,386.37

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Solution

The fourth proportional to 11,490.59, 15,856.20 and 6,386.37 is: 8,812.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.59 : 15,856.20 = 6,386.37 : x
  2. Step 2: Convert to fraction form
    11,490.59/15,856.20 = 6,386.37/x
  3. Step 3: Cross multiply
    11,490.59x = 15,856.20 × 6,386.37
  4. Step 4: Simplify right side
    11,490.59x = 101,263,559.99
  5. Step 5: Solve for x
    x = 101,263,559.99/11,490.59
  6. Step 6: Final answer
    x = 8,812.74

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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.