Home / 28,221.18-38,944.65-15,645.93

Finding the Fourth Proportional to 28,221.18, 38,944.65 and 15,645.93

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Solution

The fourth proportional to 28,221.18, 38,944.65 and 15,645.93 is: 21,591.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.18 : 38,944.65 = 15,645.93 : x
  2. Step 2: Convert to fraction form
    28,221.18/38,944.65 = 15,645.93/x
  3. Step 3: Cross multiply
    28,221.18x = 38,944.65 × 15,645.93
  4. Step 4: Simplify right side
    28,221.18x = 609,325,267.77
  5. Step 5: Solve for x
    x = 609,325,267.77/28,221.18
  6. Step 6: Final answer
    x = 21,591.06

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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.