Home / 15,035.44-20,749.20-8,320.90

Finding the Fourth Proportional to 15,035.44, 20,749.20 and 8,320.90

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Solution

The fourth proportional to 15,035.44, 20,749.20 and 8,320.90 is: 11,483.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,035.44 : 20,749.20 = 8,320.90 : x
  2. Step 2: Convert to fraction form
    15,035.44/20,749.20 = 8,320.90/x
  3. Step 3: Cross multiply
    15,035.44x = 20,749.20 × 8,320.90
  4. Step 4: Simplify right side
    15,035.44x = 172,652,018.28
  5. Step 5: Solve for x
    x = 172,652,018.28/15,035.44
  6. Step 6: Final answer
    x = 11,483.00

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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.