Home / 15,551.96-21,461.32-8,478.24

Finding the Fourth Proportional to 15,551.96, 21,461.32 and 8,478.24

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Solution

The fourth proportional to 15,551.96, 21,461.32 and 8,478.24 is: 11,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.96 : 21,461.32 = 8,478.24 : x
  2. Step 2: Convert to fraction form
    15,551.96/21,461.32 = 8,478.24/x
  3. Step 3: Cross multiply
    15,551.96x = 21,461.32 × 8,478.24
  4. Step 4: Simplify right side
    15,551.96x = 181,954,221.68
  5. Step 5: Solve for x
    x = 181,954,221.68/15,551.96
  6. Step 6: Final answer
    x = 11,699.76

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Double scale
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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.