Home / 20,513.28-30,777.08-6,475.48

Finding the Fourth Proportional to 20,513.28, 30,777.08 and 6,475.48

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Solution

The fourth proportional to 20,513.28, 30,777.08 and 6,475.48 is: 9,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.28 : 30,777.08 = 6,475.48 : x
  2. Step 2: Convert to fraction form
    20,513.28/30,777.08 = 6,475.48/x
  3. Step 3: Cross multiply
    20,513.28x = 30,777.08 × 6,475.48
  4. Step 4: Simplify right side
    20,513.28x = 199,296,366.00
  5. Step 5: Solve for x
    x = 199,296,366.00/20,513.28
  6. Step 6: Final answer
    x = 9,715.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.