Home / 39,938-59,946.66-21,218.18

Finding the Fourth Proportional to 39,938, 59,946.66 and 21,218.18

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Solution

The fourth proportional to 39,938, 59,946.66 and 21,218.18 is: 31,848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,938 : 59,946.66 = 21,218.18 : x
  2. Step 2: Convert to fraction form
    39,938/59,946.66 = 21,218.18/x
  3. Step 3: Cross multiply
    39,938x = 59,946.66 × 21,218.18
  4. Step 4: Simplify right side
    39,938x = 1,271,959,022.28
  5. Step 5: Solve for x
    x = 1,271,959,022.28/39,938
  6. Step 6: Final answer
    x = 31,848.34

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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.