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Finding the Fourth Proportional to 15,158.17, 20,917.99 and 8,444.35

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Solution

The fourth proportional to 15,158.17, 20,917.99 and 8,444.35 is: 11,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.17 : 20,917.99 = 8,444.35 : x
  2. Step 2: Convert to fraction form
    15,158.17/20,917.99 = 8,444.35/x
  3. Step 3: Cross multiply
    15,158.17x = 20,917.99 × 8,444.35
  4. Step 4: Simplify right side
    15,158.17x = 176,638,786.63
  5. Step 5: Solve for x
    x = 176,638,786.63/15,158.17
  6. Step 6: Final answer
    x = 11,653.04

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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.