Home / 22,195.10-30,621.75-13,688.30

Finding the Fourth Proportional to 22,195.10, 30,621.75 and 13,688.30

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Solution

The fourth proportional to 22,195.10, 30,621.75 and 13,688.30 is: 18,885.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.10 : 30,621.75 = 13,688.30 : x
  2. Step 2: Convert to fraction form
    22,195.10/30,621.75 = 13,688.30/x
  3. Step 3: Cross multiply
    22,195.10x = 30,621.75 × 13,688.30
  4. Step 4: Simplify right side
    22,195.10x = 419,159,700.53
  5. Step 5: Solve for x
    x = 419,159,700.53/22,195.10
  6. Step 6: Final answer
    x = 18,885.24

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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.