Home / 15,636.70-21,578.58-8,563.06

Finding the Fourth Proportional to 15,636.70, 21,578.58 and 8,563.06

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Solution

The fourth proportional to 15,636.70, 21,578.58 and 8,563.06 is: 11,816.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636.70 : 21,578.58 = 8,563.06 : x
  2. Step 2: Convert to fraction form
    15,636.70/21,578.58 = 8,563.06/x
  3. Step 3: Cross multiply
    15,636.70x = 21,578.58 × 8,563.06
  4. Step 4: Simplify right side
    15,636.70x = 184,778,675.25
  5. Step 5: Solve for x
    x = 184,778,675.25/15,636.70
  6. Step 6: Final answer
    x = 11,816.99

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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.