Home / 9,921.12-14,880.20-2,899.28

Finding the Fourth Proportional to 9,921.12, 14,880.20 and 2,899.28

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Solution

The fourth proportional to 9,921.12, 14,880.20 and 2,899.28 is: 4,348.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.12 : 14,880.20 = 2,899.28 : x
  2. Step 2: Convert to fraction form
    9,921.12/14,880.20 = 2,899.28/x
  3. Step 3: Cross multiply
    9,921.12x = 14,880.20 × 2,899.28
  4. Step 4: Simplify right side
    9,921.12x = 43,141,866.26
  5. Step 5: Solve for x
    x = 43,141,866.26/9,921.12
  6. Step 6: Final answer
    x = 4,348.49

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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.