Home / 21,004.41-31,509.81-7,150.17

Finding the Fourth Proportional to 21,004.41, 31,509.81 and 7,150.17

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Solution

The fourth proportional to 21,004.41, 31,509.81 and 7,150.17 is: 10,726.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.41 : 31,509.81 = 7,150.17 : x
  2. Step 2: Convert to fraction form
    21,004.41/31,509.81 = 7,150.17/x
  3. Step 3: Cross multiply
    21,004.41x = 31,509.81 × 7,150.17
  4. Step 4: Simplify right side
    21,004.41x = 225,300,498.17
  5. Step 5: Solve for x
    x = 225,300,498.17/21,004.41
  6. Step 6: Final answer
    x = 10,726.34

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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.