Home / 10,989.43-15,165.06-6,209.57

Finding the Fourth Proportional to 10,989.43, 15,165.06 and 6,209.57

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Solution

The fourth proportional to 10,989.43, 15,165.06 and 6,209.57 is: 8,569.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.43 : 15,165.06 = 6,209.57 : x
  2. Step 2: Convert to fraction form
    10,989.43/15,165.06 = 6,209.57/x
  3. Step 3: Cross multiply
    10,989.43x = 15,165.06 × 6,209.57
  4. Step 4: Simplify right side
    10,989.43x = 94,168,501.62
  5. Step 5: Solve for x
    x = 94,168,501.62/10,989.43
  6. Step 6: Final answer
    x = 8,569.01

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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.