Home / 19,987.38-27,582.59-11,603.88

Finding the Fourth Proportional to 19,987.38, 27,582.59 and 11,603.88

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Solution

The fourth proportional to 19,987.38, 27,582.59 and 11,603.88 is: 16,013.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.38 : 27,582.59 = 11,603.88 : x
  2. Step 2: Convert to fraction form
    19,987.38/27,582.59 = 11,603.88/x
  3. Step 3: Cross multiply
    19,987.38x = 27,582.59 × 11,603.88
  4. Step 4: Simplify right side
    19,987.38x = 320,065,064.45
  5. Step 5: Solve for x
    x = 320,065,064.45/19,987.38
  6. Step 6: Final answer
    x = 16,013.36

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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.