Home / 19,987.74-27,582.64-10,912.79

Finding the Fourth Proportional to 19,987.74, 27,582.64 and 10,912.79

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Solution

The fourth proportional to 19,987.74, 27,582.64 and 10,912.79 is: 15,059.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.74 : 27,582.64 = 10,912.79 : x
  2. Step 2: Convert to fraction form
    19,987.74/27,582.64 = 10,912.79/x
  3. Step 3: Cross multiply
    19,987.74x = 27,582.64 × 10,912.79
  4. Step 4: Simplify right side
    19,987.74x = 301,003,557.97
  5. Step 5: Solve for x
    x = 301,003,557.97/19,987.74
  6. Step 6: Final answer
    x = 15,059.41

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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.