Home / 15,447.90-21,321.60-8,737.41

Finding the Fourth Proportional to 15,447.90, 21,321.60 and 8,737.41

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Solution

The fourth proportional to 15,447.90, 21,321.60 and 8,737.41 is: 12,059.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.90 : 21,321.60 = 8,737.41 : x
  2. Step 2: Convert to fraction form
    15,447.90/21,321.60 = 8,737.41/x
  3. Step 3: Cross multiply
    15,447.90x = 21,321.60 × 8,737.41
  4. Step 4: Simplify right side
    15,447.90x = 186,295,561.06
  5. Step 5: Solve for x
    x = 186,295,561.06/15,447.90
  6. Step 6: Final answer
    x = 12,059.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.