Home / 15,007.24-20,707.14-9,415.72

Finding the Fourth Proportional to 15,007.24, 20,707.14 and 9,415.72

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Solution

The fourth proportional to 15,007.24, 20,707.14 and 9,415.72 is: 12,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.24 : 20,707.14 = 9,415.72 : x
  2. Step 2: Convert to fraction form
    15,007.24/20,707.14 = 9,415.72/x
  3. Step 3: Cross multiply
    15,007.24x = 20,707.14 × 9,415.72
  4. Step 4: Simplify right side
    15,007.24x = 194,972,632.24
  5. Step 5: Solve for x
    x = 194,972,632.24/15,007.24
  6. Step 6: Final answer
    x = 12,991.90

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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.