Home / 21,435.72-32,158.44-6,645.12

Finding the Fourth Proportional to 21,435.72, 32,158.44 and 6,645.12

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Solution

The fourth proportional to 21,435.72, 32,158.44 and 6,645.12 is: 9,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.72 : 32,158.44 = 6,645.12 : x
  2. Step 2: Convert to fraction form
    21,435.72/32,158.44 = 6,645.12/x
  3. Step 3: Cross multiply
    21,435.72x = 32,158.44 × 6,645.12
  4. Step 4: Simplify right side
    21,435.72x = 213,696,692.81
  5. Step 5: Solve for x
    x = 213,696,692.81/21,435.72
  6. Step 6: Final answer
    x = 9,969.19

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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.