Home / 15,349.17-21,183.09-8,634.40

Finding the Fourth Proportional to 15,349.17, 21,183.09 and 8,634.40

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Solution

The fourth proportional to 15,349.17, 21,183.09 and 8,634.40 is: 11,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.17 : 21,183.09 = 8,634.40 : x
  2. Step 2: Convert to fraction form
    15,349.17/21,183.09 = 8,634.40/x
  3. Step 3: Cross multiply
    15,349.17x = 21,183.09 × 8,634.40
  4. Step 4: Simplify right side
    15,349.17x = 182,903,266.90
  5. Step 5: Solve for x
    x = 182,903,266.90/15,349.17
  6. Step 6: Final answer
    x = 11,916.16

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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.