Home / 9,891.18-13,649.99-5,415.36

Finding the Fourth Proportional to 9,891.18, 13,649.99 and 5,415.36

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Solution

The fourth proportional to 9,891.18, 13,649.99 and 5,415.36 is: 7,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.18 : 13,649.99 = 5,415.36 : x
  2. Step 2: Convert to fraction form
    9,891.18/13,649.99 = 5,415.36/x
  3. Step 3: Cross multiply
    9,891.18x = 13,649.99 × 5,415.36
  4. Step 4: Simplify right side
    9,891.18x = 73,919,582.77
  5. Step 5: Solve for x
    x = 73,919,582.77/9,891.18
  6. Step 6: Final answer
    x = 7,473.28

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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.