Home / 21,970.72-32,923.68-20,160.64

Finding the Fourth Proportional to 21,970.72, 32,923.68 and 20,160.64

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Solution

The fourth proportional to 21,970.72, 32,923.68 and 20,160.64 is: 30,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.72 : 32,923.68 = 20,160.64 : x
  2. Step 2: Convert to fraction form
    21,970.72/32,923.68 = 20,160.64/x
  3. Step 3: Cross multiply
    21,970.72x = 32,923.68 × 20,160.64
  4. Step 4: Simplify right side
    21,970.72x = 663,762,459.96
  5. Step 5: Solve for x
    x = 663,762,459.96/21,970.72
  6. Step 6: Final answer
    x = 30,211.23

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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.