Home / 15,636.72-21,578.60-8,563.08

Finding the Fourth Proportional to 15,636.72, 21,578.60 and 8,563.08

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Solution

The fourth proportional to 15,636.72, 21,578.60 and 8,563.08 is: 11,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636.72 : 21,578.60 = 8,563.08 : x
  2. Step 2: Convert to fraction form
    15,636.72/21,578.60 = 8,563.08/x
  3. Step 3: Cross multiply
    15,636.72x = 21,578.60 × 8,563.08
  4. Step 4: Simplify right side
    15,636.72x = 184,779,278.09
  5. Step 5: Solve for x
    x = 184,779,278.09/15,636.72
  6. Step 6: Final answer
    x = 11,817.01

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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.