Home / 39,885.93-55,042.59-21,736.53

Finding the Fourth Proportional to 39,885.93, 55,042.59 and 21,736.53

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Solution

The fourth proportional to 39,885.93, 55,042.59 and 21,736.53 is: 29,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,885.93 : 55,042.59 = 21,736.53 : x
  2. Step 2: Convert to fraction form
    39,885.93/55,042.59 = 21,736.53/x
  3. Step 3: Cross multiply
    39,885.93x = 55,042.59 × 21,736.53
  4. Step 4: Simplify right side
    39,885.93x = 1,196,434,908.81
  5. Step 5: Solve for x
    x = 1,196,434,908.81/39,885.93
  6. Step 6: Final answer
    x = 29,996.41

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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.