Home / 20,987.56-28,973.54-16,196.74

Finding the Fourth Proportional to 20,987.56, 28,973.54 and 16,196.74

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Solution

The fourth proportional to 20,987.56, 28,973.54 and 16,196.74 is: 22,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.56 : 28,973.54 = 16,196.74 : x
  2. Step 2: Convert to fraction form
    20,987.56/28,973.54 = 16,196.74/x
  3. Step 3: Cross multiply
    20,987.56x = 28,973.54 × 16,196.74
  4. Step 4: Simplify right side
    20,987.56x = 469,276,894.26
  5. Step 5: Solve for x
    x = 469,276,894.26/20,987.56
  6. Step 6: Final answer
    x = 22,359.76

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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.