Home / 15,763.44-21,752.70-8,688.48

Finding the Fourth Proportional to 15,763.44, 21,752.70 and 8,688.48

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Solution

The fourth proportional to 15,763.44, 21,752.70 and 8,688.48 is: 11,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.44 : 21,752.70 = 8,688.48 : x
  2. Step 2: Convert to fraction form
    15,763.44/21,752.70 = 8,688.48/x
  3. Step 3: Cross multiply
    15,763.44x = 21,752.70 × 8,688.48
  4. Step 4: Simplify right side
    15,763.44x = 188,997,898.90
  5. Step 5: Solve for x
    x = 188,997,898.90/15,763.44
  6. Step 6: Final answer
    x = 11,989.64

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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.