Home / 39,869.02-55,019.95-21,963.90

Finding the Fourth Proportional to 39,869.02, 55,019.95 and 21,963.90

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Solution

The fourth proportional to 39,869.02, 55,019.95 and 21,963.90 is: 30,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,869.02 : 55,019.95 = 21,963.90 : x
  2. Step 2: Convert to fraction form
    39,869.02/55,019.95 = 21,963.90/x
  3. Step 3: Cross multiply
    39,869.02x = 55,019.95 × 21,963.90
  4. Step 4: Simplify right side
    39,869.02x = 1,208,452,679.81
  5. Step 5: Solve for x
    x = 1,208,452,679.81/39,869.02
  6. Step 6: Final answer
    x = 30,310.57

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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.