Home / 39,865.42-55,013.58-21,962.08

Finding the Fourth Proportional to 39,865.42, 55,013.58 and 21,962.08

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Solution

The fourth proportional to 39,865.42, 55,013.58 and 21,962.08 is: 30,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,865.42 : 55,013.58 = 21,962.08 : x
  2. Step 2: Convert to fraction form
    39,865.42/55,013.58 = 21,962.08/x
  3. Step 3: Cross multiply
    39,865.42x = 55,013.58 × 21,962.08
  4. Step 4: Simplify right side
    39,865.42x = 1,208,212,645.05
  5. Step 5: Solve for x
    x = 1,208,212,645.05/39,865.42
  6. Step 6: Final answer
    x = 30,307.28

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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.