Home / 34,139.61-51,228.81-11,969.46

Finding the Fourth Proportional to 34,139.61, 51,228.81 and 11,969.46

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Solution

The fourth proportional to 34,139.61, 51,228.81 and 11,969.46 is: 17,960.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,139.61 : 51,228.81 = 11,969.46 : x
  2. Step 2: Convert to fraction form
    34,139.61/51,228.81 = 11,969.46/x
  3. Step 3: Cross multiply
    34,139.61x = 51,228.81 × 11,969.46
  4. Step 4: Simplify right side
    34,139.61x = 613,181,192.14
  5. Step 5: Solve for x
    x = 613,181,192.14/34,139.61
  6. Step 6: Final answer
    x = 17,960.99

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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.