Home / 28,921.76-39,909.84-16,347.68

Finding the Fourth Proportional to 28,921.76, 39,909.84 and 16,347.68

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Solution

The fourth proportional to 28,921.76, 39,909.84 and 16,347.68 is: 22,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.76 : 39,909.84 = 16,347.68 : x
  2. Step 2: Convert to fraction form
    28,921.76/39,909.84 = 16,347.68/x
  3. Step 3: Cross multiply
    28,921.76x = 39,909.84 × 16,347.68
  4. Step 4: Simplify right side
    28,921.76x = 652,433,293.17
  5. Step 5: Solve for x
    x = 652,433,293.17/28,921.76
  6. Step 6: Final answer
    x = 22,558.56

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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.