Home / 39,866.09-55,017.72-21,961.08

Finding the Fourth Proportional to 39,866.09, 55,017.72 and 21,961.08

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Solution

The fourth proportional to 39,866.09, 55,017.72 and 21,961.08 is: 30,307.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,866.09 : 55,017.72 = 21,961.08 : x
  2. Step 2: Convert to fraction form
    39,866.09/55,017.72 = 21,961.08/x
  3. Step 3: Cross multiply
    39,866.09x = 55,017.72 × 21,961.08
  4. Step 4: Simplify right side
    39,866.09x = 1,208,248,550.34
  5. Step 5: Solve for x
    x = 1,208,248,550.34/39,866.09
  6. Step 6: Final answer
    x = 30,307.68

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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.