Home / 22,419.86-30,715.34-21,579.08

Finding the Fourth Proportional to 22,419.86, 30,715.34 and 21,579.08

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Solution

The fourth proportional to 22,419.86, 30,715.34 and 21,579.08 is: 29,563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,419.86 : 30,715.34 = 21,579.08 : x
  2. Step 2: Convert to fraction form
    22,419.86/30,715.34 = 21,579.08/x
  3. Step 3: Cross multiply
    22,419.86x = 30,715.34 × 21,579.08
  4. Step 4: Simplify right side
    22,419.86x = 662,808,517.62
  5. Step 5: Solve for x
    x = 662,808,517.62/22,419.86
  6. Step 6: Final answer
    x = 29,563.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.