Home / 39,869.31-55,018.35-21,964.26

Finding the Fourth Proportional to 39,869.31, 55,018.35 and 21,964.26

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Solution

The fourth proportional to 39,869.31, 55,018.35 and 21,964.26 is: 30,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,869.31 : 55,018.35 = 21,964.26 : x
  2. Step 2: Convert to fraction form
    39,869.31/55,018.35 = 21,964.26/x
  3. Step 3: Cross multiply
    39,869.31x = 55,018.35 × 21,964.26
  4. Step 4: Simplify right side
    39,869.31x = 1,208,437,344.17
  5. Step 5: Solve for x
    x = 1,208,437,344.17/39,869.31
  6. Step 6: Final answer
    x = 30,309.96

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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.