Home / 21,972.89-32,952.60-7,931.20

Finding the Fourth Proportional to 21,972.89, 32,952.60 and 7,931.20

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Solution

The fourth proportional to 21,972.89, 32,952.60 and 7,931.20 is: 11,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.89 : 32,952.60 = 7,931.20 : x
  2. Step 2: Convert to fraction form
    21,972.89/32,952.60 = 7,931.20/x
  3. Step 3: Cross multiply
    21,972.89x = 32,952.60 × 7,931.20
  4. Step 4: Simplify right side
    21,972.89x = 261,353,661.12
  5. Step 5: Solve for x
    x = 261,353,661.12/21,972.89
  6. Step 6: Final answer
    x = 11,894.37

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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.