Home / 15,616.92-21,551.31-8,543.28

Finding the Fourth Proportional to 15,616.92, 21,551.31 and 8,543.28

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Solution

The fourth proportional to 15,616.92, 21,551.31 and 8,543.28 is: 11,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616.92 : 21,551.31 = 8,543.28 : x
  2. Step 2: Convert to fraction form
    15,616.92/21,551.31 = 8,543.28/x
  3. Step 3: Cross multiply
    15,616.92x = 21,551.31 × 8,543.28
  4. Step 4: Simplify right side
    15,616.92x = 184,118,875.70
  5. Step 5: Solve for x
    x = 184,118,875.70/15,616.92
  6. Step 6: Final answer
    x = 11,789.70

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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.