Home / 10,720.64-16,080.96-2,929.66

Finding the Fourth Proportional to 10,720.64, 16,080.96 and 2,929.66

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Solution

The fourth proportional to 10,720.64, 16,080.96 and 2,929.66 is: 4,394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.64 : 16,080.96 = 2,929.66 : x
  2. Step 2: Convert to fraction form
    10,720.64/16,080.96 = 2,929.66/x
  3. Step 3: Cross multiply
    10,720.64x = 16,080.96 × 2,929.66
  4. Step 4: Simplify right side
    10,720.64x = 47,111,745.27
  5. Step 5: Solve for x
    x = 47,111,745.27/10,720.64
  6. Step 6: Final answer
    x = 4,394.49

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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.