Home / 21,823.57-32,749.70-11,969.76

Finding the Fourth Proportional to 21,823.57, 32,749.70 and 11,969.76

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Solution

The fourth proportional to 21,823.57, 32,749.70 and 11,969.76 is: 17,962.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,823.57 : 32,749.70 = 11,969.76 : x
  2. Step 2: Convert to fraction form
    21,823.57/32,749.70 = 11,969.76/x
  3. Step 3: Cross multiply
    21,823.57x = 32,749.70 × 11,969.76
  4. Step 4: Simplify right side
    21,823.57x = 392,005,989.22
  5. Step 5: Solve for x
    x = 392,005,989.22/21,823.57
  6. Step 6: Final answer
    x = 17,962.51

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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.