Home / 21,128.16-31,692.66-6,337.32

Finding the Fourth Proportional to 21,128.16, 31,692.66 and 6,337.32

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Solution

The fourth proportional to 21,128.16, 31,692.66 and 6,337.32 is: 9,506.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,128.16 : 31,692.66 = 6,337.32 : x
  2. Step 2: Convert to fraction form
    21,128.16/31,692.66 = 6,337.32/x
  3. Step 3: Cross multiply
    21,128.16x = 31,692.66 × 6,337.32
  4. Step 4: Simplify right side
    21,128.16x = 200,846,528.07
  5. Step 5: Solve for x
    x = 200,846,528.07/21,128.16
  6. Step 6: Final answer
    x = 9,506.11

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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.