Home / 15,678.54-21,636.32-8,508.30

Finding the Fourth Proportional to 15,678.54, 21,636.32 and 8,508.30

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Solution

The fourth proportional to 15,678.54, 21,636.32 and 8,508.30 is: 11,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.54 : 21,636.32 = 8,508.30 : x
  2. Step 2: Convert to fraction form
    15,678.54/21,636.32 = 8,508.30/x
  3. Step 3: Cross multiply
    15,678.54x = 21,636.32 × 8,508.30
  4. Step 4: Simplify right side
    15,678.54x = 184,088,301.46
  5. Step 5: Solve for x
    x = 184,088,301.46/15,678.54
  6. Step 6: Final answer
    x = 11,741.42

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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.