Home / 15,638.17-21,580.68-8,565.03

Finding the Fourth Proportional to 15,638.17, 21,580.68 and 8,565.03

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Solution

The fourth proportional to 15,638.17, 21,580.68 and 8,565.03 is: 11,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.17 : 21,580.68 = 8,565.03 : x
  2. Step 2: Convert to fraction form
    15,638.17/21,580.68 = 8,565.03/x
  3. Step 3: Cross multiply
    15,638.17x = 21,580.68 × 8,565.03
  4. Step 4: Simplify right side
    15,638.17x = 184,839,171.62
  5. Step 5: Solve for x
    x = 184,839,171.62/15,638.17
  6. Step 6: Final answer
    x = 11,819.74

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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.