Home / 10,969.40-15,138.72-6,492.44

Finding the Fourth Proportional to 10,969.40, 15,138.72 and 6,492.44

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Solution

The fourth proportional to 10,969.40, 15,138.72 and 6,492.44 is: 8,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.40 : 15,138.72 = 6,492.44 : x
  2. Step 2: Convert to fraction form
    10,969.40/15,138.72 = 6,492.44/x
  3. Step 3: Cross multiply
    10,969.40x = 15,138.72 × 6,492.44
  4. Step 4: Simplify right side
    10,969.40x = 98,287,231.28
  5. Step 5: Solve for x
    x = 98,287,231.28/10,969.40
  6. Step 6: Final answer
    x = 8,960.13

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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.