Home / 39,888.14-55,043.16-21,982.15

Finding the Fourth Proportional to 39,888.14, 55,043.16 and 21,982.15

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Solution

The fourth proportional to 39,888.14, 55,043.16 and 21,982.15 is: 30,334.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.14 : 55,043.16 = 21,982.15 : x
  2. Step 2: Convert to fraction form
    39,888.14/55,043.16 = 21,982.15/x
  3. Step 3: Cross multiply
    39,888.14x = 55,043.16 × 21,982.15
  4. Step 4: Simplify right side
    39,888.14x = 1,209,966,724.38
  5. Step 5: Solve for x
    x = 1,209,966,724.38/39,888.14
  6. Step 6: Final answer
    x = 30,334.00

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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.