Home / 28,887.36-39,864.06-16,140.80

Finding the Fourth Proportional to 28,887.36, 39,864.06 and 16,140.80

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Solution

The fourth proportional to 28,887.36, 39,864.06 and 16,140.80 is: 22,274.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.36 : 39,864.06 = 16,140.80 : x
  2. Step 2: Convert to fraction form
    28,887.36/39,864.06 = 16,140.80/x
  3. Step 3: Cross multiply
    28,887.36x = 39,864.06 × 16,140.80
  4. Step 4: Simplify right side
    28,887.36x = 643,437,620.33
  5. Step 5: Solve for x
    x = 643,437,620.33/28,887.36
  6. Step 6: Final answer
    x = 22,274.02

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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.