Home / 20,657.79-28,507.92-11,226.34

Finding the Fourth Proportional to 20,657.79, 28,507.92 and 11,226.34

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Solution

The fourth proportional to 20,657.79, 28,507.92 and 11,226.34 is: 15,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.79 : 28,507.92 = 11,226.34 : x
  2. Step 2: Convert to fraction form
    20,657.79/28,507.92 = 11,226.34/x
  3. Step 3: Cross multiply
    20,657.79x = 28,507.92 × 11,226.34
  4. Step 4: Simplify right side
    20,657.79x = 320,039,602.61
  5. Step 5: Solve for x
    x = 320,039,602.61/20,657.79
  6. Step 6: Final answer
    x = 15,492.44

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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.