Home / 10,914.71-15,064.11-6,439.56

Finding the Fourth Proportional to 10,914.71, 15,064.11 and 6,439.56

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Solution

The fourth proportional to 10,914.71, 15,064.11 and 6,439.56 is: 8,887.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,914.71 : 15,064.11 = 6,439.56 : x
  2. Step 2: Convert to fraction form
    10,914.71/15,064.11 = 6,439.56/x
  3. Step 3: Cross multiply
    10,914.71x = 15,064.11 × 6,439.56
  4. Step 4: Simplify right side
    10,914.71x = 97,006,240.19
  5. Step 5: Solve for x
    x = 97,006,240.19/10,914.71
  6. Step 6: Final answer
    x = 8,887.66

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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.