Home / 15,933.71-21,987.66-9,219.45

Finding the Fourth Proportional to 15,933.71, 21,987.66 and 9,219.45

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Solution

The fourth proportional to 15,933.71, 21,987.66 and 9,219.45 is: 12,722.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.71 : 21,987.66 = 9,219.45 : x
  2. Step 2: Convert to fraction form
    15,933.71/21,987.66 = 9,219.45/x
  3. Step 3: Cross multiply
    15,933.71x = 21,987.66 × 9,219.45
  4. Step 4: Simplify right side
    15,933.71x = 202,714,131.99
  5. Step 5: Solve for x
    x = 202,714,131.99/15,933.71
  6. Step 6: Final answer
    x = 12,722.34

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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.