Home / 19,895.57-29,837.88-7,420.55

Finding the Fourth Proportional to 19,895.57, 29,837.88 and 7,420.55

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Solution

The fourth proportional to 19,895.57, 29,837.88 and 7,420.55 is: 11,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,895.57 : 29,837.88 = 7,420.55 : x
  2. Step 2: Convert to fraction form
    19,895.57/29,837.88 = 7,420.55/x
  3. Step 3: Cross multiply
    19,895.57x = 29,837.88 × 7,420.55
  4. Step 4: Simplify right side
    19,895.57x = 221,413,480.43
  5. Step 5: Solve for x
    x = 221,413,480.43/19,895.57
  6. Step 6: Final answer
    x = 11,128.78

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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.