Home / 10,989.84-15,168.74-6,276.86

Finding the Fourth Proportional to 10,989.84, 15,168.74 and 6,276.86

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Solution

The fourth proportional to 10,989.84, 15,168.74 and 6,276.86 is: 8,663.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.84 : 15,168.74 = 6,276.86 : x
  2. Step 2: Convert to fraction form
    10,989.84/15,168.74 = 6,276.86/x
  3. Step 3: Cross multiply
    10,989.84x = 15,168.74 × 6,276.86
  4. Step 4: Simplify right side
    10,989.84x = 95,212,007.01
  5. Step 5: Solve for x
    x = 95,212,007.01/10,989.84
  6. Step 6: Final answer
    x = 8,663.64

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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.