Home / 15,981.45-22,055.37-8,907.86

Finding the Fourth Proportional to 15,981.45, 22,055.37 and 8,907.86

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Solution

The fourth proportional to 15,981.45, 22,055.37 and 8,907.86 is: 12,293.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.45 : 22,055.37 = 8,907.86 : x
  2. Step 2: Convert to fraction form
    15,981.45/22,055.37 = 8,907.86/x
  3. Step 3: Cross multiply
    15,981.45x = 22,055.37 × 8,907.86
  4. Step 4: Simplify right side
    15,981.45x = 196,466,148.21
  5. Step 5: Solve for x
    x = 196,466,148.21/15,981.45
  6. Step 6: Final answer
    x = 12,293.39

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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.