Home / 21,981.93-32,965.52-7,187.39

Finding the Fourth Proportional to 21,981.93, 32,965.52 and 7,187.39

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Solution

The fourth proportional to 21,981.93, 32,965.52 and 7,187.39 is: 10,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.93 : 32,965.52 = 7,187.39 : x
  2. Step 2: Convert to fraction form
    21,981.93/32,965.52 = 7,187.39/x
  3. Step 3: Cross multiply
    21,981.93x = 32,965.52 × 7,187.39
  4. Step 4: Simplify right side
    21,981.93x = 236,935,848.03
  5. Step 5: Solve for x
    x = 236,935,848.03/21,981.93
  6. Step 6: Final answer
    x = 10,778.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.