Home / 15,638.32-21,580.08-8,563.38

Finding the Fourth Proportional to 15,638.32, 21,580.08 and 8,563.38

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Solution

The fourth proportional to 15,638.32, 21,580.08 and 8,563.38 is: 11,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.32 : 21,580.08 = 8,563.38 : x
  2. Step 2: Convert to fraction form
    15,638.32/21,580.08 = 8,563.38/x
  3. Step 3: Cross multiply
    15,638.32x = 21,580.08 × 8,563.38
  4. Step 4: Simplify right side
    15,638.32x = 184,798,274.75
  5. Step 5: Solve for x
    x = 184,798,274.75/15,638.32
  6. Step 6: Final answer
    x = 11,817.02

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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.