Home / 41,128.40-61,692.60-11,547.20

Finding the Fourth Proportional to 41,128.40, 61,692.60 and 11,547.20

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Solution

The fourth proportional to 41,128.40, 61,692.60 and 11,547.20 is: 17,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,128.40 : 61,692.60 = 11,547.20 : x
  2. Step 2: Convert to fraction form
    41,128.40/61,692.60 = 11,547.20/x
  3. Step 3: Cross multiply
    41,128.40x = 61,692.60 × 11,547.20
  4. Step 4: Simplify right side
    41,128.40x = 712,376,790.72
  5. Step 5: Solve for x
    x = 712,376,790.72/41,128.40
  6. Step 6: Final answer
    x = 17,320.80

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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.