Home / 39,915.05-55,079.95-22,009.68

Finding the Fourth Proportional to 39,915.05, 55,079.95 and 22,009.68

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Solution

The fourth proportional to 39,915.05, 55,079.95 and 22,009.68 is: 30,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.05 : 55,079.95 = 22,009.68 : x
  2. Step 2: Convert to fraction form
    39,915.05/55,079.95 = 22,009.68/x
  3. Step 3: Cross multiply
    39,915.05x = 55,079.95 × 22,009.68
  4. Step 4: Simplify right side
    39,915.05x = 1,212,292,073.92
  5. Step 5: Solve for x
    x = 1,212,292,073.92/39,915.05
  6. Step 6: Final answer
    x = 30,371.80

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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.