Home / 15,638.94-21,581.73-8,565.30

Finding the Fourth Proportional to 15,638.94, 21,581.73 and 8,565.30

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Solution

The fourth proportional to 15,638.94, 21,581.73 and 8,565.30 is: 11,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.94 : 21,581.73 = 8,565.30 : x
  2. Step 2: Convert to fraction form
    15,638.94/21,581.73 = 8,565.30/x
  3. Step 3: Cross multiply
    15,638.94x = 21,581.73 × 8,565.30
  4. Step 4: Simplify right side
    15,638.94x = 184,853,991.97
  5. Step 5: Solve for x
    x = 184,853,991.97/15,638.94
  6. Step 6: Final answer
    x = 11,820.11

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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.