Home / 15,004.94-20,709.34-8,720.96

Finding the Fourth Proportional to 15,004.94, 20,709.34 and 8,720.96

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Solution

The fourth proportional to 15,004.94, 20,709.34 and 8,720.96 is: 12,036.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.94 : 20,709.34 = 8,720.96 : x
  2. Step 2: Convert to fraction form
    15,004.94/20,709.34 = 8,720.96/x
  3. Step 3: Cross multiply
    15,004.94x = 20,709.34 × 8,720.96
  4. Step 4: Simplify right side
    15,004.94x = 180,605,200.42
  5. Step 5: Solve for x
    x = 180,605,200.42/15,004.94
  6. Step 6: Final answer
    x = 12,036.39

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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.