Home / 8,955.90-13,436.42-4,272.21

Finding the Fourth Proportional to 8,955.90, 13,436.42 and 4,272.21

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Solution

The fourth proportional to 8,955.90, 13,436.42 and 4,272.21 is: 6,409.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.90 : 13,436.42 = 4,272.21 : x
  2. Step 2: Convert to fraction form
    8,955.90/13,436.42 = 4,272.21/x
  3. Step 3: Cross multiply
    8,955.90x = 13,436.42 × 4,272.21
  4. Step 4: Simplify right side
    8,955.90x = 57,403,186.53
  5. Step 5: Solve for x
    x = 57,403,186.53/8,955.90
  6. Step 6: Final answer
    x = 6,409.54

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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.