Home / 39,858.63-55,005.29-21,954.18

Finding the Fourth Proportional to 39,858.63, 55,005.29 and 21,954.18

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Solution

The fourth proportional to 39,858.63, 55,005.29 and 21,954.18 is: 30,296.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,858.63 : 55,005.29 = 21,954.18 : x
  2. Step 2: Convert to fraction form
    39,858.63/55,005.29 = 21,954.18/x
  3. Step 3: Cross multiply
    39,858.63x = 55,005.29 × 21,954.18
  4. Step 4: Simplify right side
    39,858.63x = 1,207,596,037.61
  5. Step 5: Solve for x
    x = 1,207,596,037.61/39,858.63
  6. Step 6: Final answer
    x = 30,296.98

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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.