Home / 20,419.84-30,570.26-15,178.06

Finding the Fourth Proportional to 20,419.84, 30,570.26 and 15,178.06

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Solution

The fourth proportional to 20,419.84, 30,570.26 and 15,178.06 is: 22,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.84 : 30,570.26 = 15,178.06 : x
  2. Step 2: Convert to fraction form
    20,419.84/30,570.26 = 15,178.06/x
  3. Step 3: Cross multiply
    20,419.84x = 30,570.26 × 15,178.06
  4. Step 4: Simplify right side
    20,419.84x = 463,997,240.50
  5. Step 5: Solve for x
    x = 463,997,240.50/20,419.84
  6. Step 6: Final answer
    x = 22,722.86

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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.