Home / 39,897.60-55,056.48-21,992.58

Finding the Fourth Proportional to 39,897.60, 55,056.48 and 21,992.58

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Solution

The fourth proportional to 39,897.60, 55,056.48 and 21,992.58 is: 30,348.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.60 : 55,056.48 = 21,992.58 : x
  2. Step 2: Convert to fraction form
    39,897.60/55,056.48 = 21,992.58/x
  3. Step 3: Cross multiply
    39,897.60x = 55,056.48 × 21,992.58
  4. Step 4: Simplify right side
    39,897.60x = 1,210,834,040.92
  5. Step 5: Solve for x
    x = 1,210,834,040.92/39,897.60
  6. Step 6: Final answer
    x = 30,348.54

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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.