Home / 20,657.28-30,980.36-8,967.76

Finding the Fourth Proportional to 20,657.28, 30,980.36 and 8,967.76

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Solution

The fourth proportional to 20,657.28, 30,980.36 and 8,967.76 is: 13,449.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.28 : 30,980.36 = 8,967.76 : x
  2. Step 2: Convert to fraction form
    20,657.28/30,980.36 = 8,967.76/x
  3. Step 3: Cross multiply
    20,657.28x = 30,980.36 × 8,967.76
  4. Step 4: Simplify right side
    20,657.28x = 277,824,433.19
  5. Step 5: Solve for x
    x = 277,824,433.19/20,657.28
  6. Step 6: Final answer
    x = 13,449.23

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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.