Home / 15,941.18-21,999.85-8,867.60

Finding the Fourth Proportional to 15,941.18, 21,999.85 and 8,867.60

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Solution

The fourth proportional to 15,941.18, 21,999.85 and 8,867.60 is: 12,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,941.18 : 21,999.85 = 8,867.60 : x
  2. Step 2: Convert to fraction form
    15,941.18/21,999.85 = 8,867.60/x
  3. Step 3: Cross multiply
    15,941.18x = 21,999.85 × 8,867.60
  4. Step 4: Simplify right side
    15,941.18x = 195,085,931.95
  5. Step 5: Solve for x
    x = 195,085,931.95/15,941.18
  6. Step 6: Final answer
    x = 12,237.86

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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.