Home / 21,564.10-32,155.70-18,942.34

Finding the Fourth Proportional to 21,564.10, 32,155.70 and 18,942.34

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Solution

The fourth proportional to 21,564.10, 32,155.70 and 18,942.34 is: 28,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.10 : 32,155.70 = 18,942.34 : x
  2. Step 2: Convert to fraction form
    21,564.10/32,155.70 = 18,942.34/x
  3. Step 3: Cross multiply
    21,564.10x = 32,155.70 × 18,942.34
  4. Step 4: Simplify right side
    21,564.10x = 609,104,202.34
  5. Step 5: Solve for x
    x = 609,104,202.34/21,564.10
  6. Step 6: Final answer
    x = 28,246.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.