Home / 15,638.19-21,579.99-8,564.46

Finding the Fourth Proportional to 15,638.19, 21,579.99 and 8,564.46

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Solution

The fourth proportional to 15,638.19, 21,579.99 and 8,564.46 is: 11,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.19 : 21,579.99 = 8,564.46 : x
  2. Step 2: Convert to fraction form
    15,638.19/21,579.99 = 8,564.46/x
  3. Step 3: Cross multiply
    15,638.19x = 21,579.99 × 8,564.46
  4. Step 4: Simplify right side
    15,638.19x = 184,820,961.16
  5. Step 5: Solve for x
    x = 184,820,961.16/15,638.19
  6. Step 6: Final answer
    x = 11,818.56

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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.