Home / 9,890.20-13,649.21-5,913.51

Finding the Fourth Proportional to 9,890.20, 13,649.21 and 5,913.51

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Solution

The fourth proportional to 9,890.20, 13,649.21 and 5,913.51 is: 8,161.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,890.20 : 13,649.21 = 5,913.51 : x
  2. Step 2: Convert to fraction form
    9,890.20/13,649.21 = 5,913.51/x
  3. Step 3: Cross multiply
    9,890.20x = 13,649.21 × 5,913.51
  4. Step 4: Simplify right side
    9,890.20x = 80,714,739.83
  5. Step 5: Solve for x
    x = 80,714,739.83/9,890.20
  6. Step 6: Final answer
    x = 8,161.08

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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.