Home / 10,921.44-16,382.16-3,130.25

Finding the Fourth Proportional to 10,921.44, 16,382.16 and 3,130.25

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Solution

The fourth proportional to 10,921.44, 16,382.16 and 3,130.25 is: 4,695.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.44 : 16,382.16 = 3,130.25 : x
  2. Step 2: Convert to fraction form
    10,921.44/16,382.16 = 3,130.25/x
  3. Step 3: Cross multiply
    10,921.44x = 16,382.16 × 3,130.25
  4. Step 4: Simplify right side
    10,921.44x = 51,280,256.34
  5. Step 5: Solve for x
    x = 51,280,256.34/10,921.44
  6. Step 6: Final answer
    x = 4,695.38

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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.