Home / 15,921.39-21,971.73-9,633.76

Finding the Fourth Proportional to 15,921.39, 21,971.73 and 9,633.76

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Solution

The fourth proportional to 15,921.39, 21,971.73 and 9,633.76 is: 13,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.39 : 21,971.73 = 9,633.76 : x
  2. Step 2: Convert to fraction form
    15,921.39/21,971.73 = 9,633.76/x
  3. Step 3: Cross multiply
    15,921.39x = 21,971.73 × 9,633.76
  4. Step 4: Simplify right side
    15,921.39x = 211,670,373.60
  5. Step 5: Solve for x
    x = 211,670,373.60/15,921.39
  6. Step 6: Final answer
    x = 13,294.72

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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.