Home / 10,310.28-14,218.80-8,720.28

Finding the Fourth Proportional to 10,310.28, 14,218.80 and 8,720.28

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Solution

The fourth proportional to 10,310.28, 14,218.80 and 8,720.28 is: 12,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,310.28 : 14,218.80 = 8,720.28 : x
  2. Step 2: Convert to fraction form
    10,310.28/14,218.80 = 8,720.28/x
  3. Step 3: Cross multiply
    10,310.28x = 14,218.80 × 8,720.28
  4. Step 4: Simplify right side
    10,310.28x = 123,991,917.26
  5. Step 5: Solve for x
    x = 123,991,917.26/10,310.28
  6. Step 6: Final answer
    x = 12,026.05

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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.