Home / 28,738.18-39,656.55-16,160.50

Finding the Fourth Proportional to 28,738.18, 39,656.55 and 16,160.50

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Solution

The fourth proportional to 28,738.18, 39,656.55 and 16,160.50 is: 22,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.18 : 39,656.55 = 16,160.50 : x
  2. Step 2: Convert to fraction form
    28,738.18/39,656.55 = 16,160.50/x
  3. Step 3: Cross multiply
    28,738.18x = 39,656.55 × 16,160.50
  4. Step 4: Simplify right side
    28,738.18x = 640,869,676.28
  5. Step 5: Solve for x
    x = 640,869,676.28/28,738.18
  6. Step 6: Final answer
    x = 22,300.29

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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.