Home / 28,800.88-39,756.36-22,515.28

Finding the Fourth Proportional to 28,800.88, 39,756.36 and 22,515.28

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Solution

The fourth proportional to 28,800.88, 39,756.36 and 22,515.28 is: 31,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,800.88 : 39,756.36 = 22,515.28 : x
  2. Step 2: Convert to fraction form
    28,800.88/39,756.36 = 22,515.28/x
  3. Step 3: Cross multiply
    28,800.88x = 39,756.36 × 22,515.28
  4. Step 4: Simplify right side
    28,800.88x = 895,125,577.18
  5. Step 5: Solve for x
    x = 895,125,577.18/28,800.88
  6. Step 6: Final answer
    x = 31,079.80

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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.