Home / 19,987.76-27,557.44-16,389.52

Finding the Fourth Proportional to 19,987.76, 27,557.44 and 16,389.52

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Solution

The fourth proportional to 19,987.76, 27,557.44 and 16,389.52 is: 22,596.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.76 : 27,557.44 = 16,389.52 : x
  2. Step 2: Convert to fraction form
    19,987.76/27,557.44 = 16,389.52/x
  3. Step 3: Cross multiply
    19,987.76x = 27,557.44 × 16,389.52
  4. Step 4: Simplify right side
    19,987.76x = 451,653,214.03
  5. Step 5: Solve for x
    x = 451,653,214.03/19,987.76
  6. Step 6: Final answer
    x = 22,596.49

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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.