Home / 10,887.34-16,331.00-7,188.71

Finding the Fourth Proportional to 10,887.34, 16,331.00 and 7,188.71

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Solution

The fourth proportional to 10,887.34, 16,331.00 and 7,188.71 is: 10,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.34 : 16,331.00 = 7,188.71 : x
  2. Step 2: Convert to fraction form
    10,887.34/16,331.00 = 7,188.71/x
  3. Step 3: Cross multiply
    10,887.34x = 16,331.00 × 7,188.71
  4. Step 4: Simplify right side
    10,887.34x = 117,398,732.37
  5. Step 5: Solve for x
    x = 117,398,732.37/10,887.34
  6. Step 6: Final answer
    x = 10,783.05

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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.