Home / 28,962.10-39,971.42-16,220.12

Finding the Fourth Proportional to 28,962.10, 39,971.42 and 16,220.12

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Solution

The fourth proportional to 28,962.10, 39,971.42 and 16,220.12 is: 22,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,962.10 : 39,971.42 = 16,220.12 : x
  2. Step 2: Convert to fraction form
    28,962.10/39,971.42 = 16,220.12/x
  3. Step 3: Cross multiply
    28,962.10x = 39,971.42 × 16,220.12
  4. Step 4: Simplify right side
    28,962.10x = 648,341,269.52
  5. Step 5: Solve for x
    x = 648,341,269.52/28,962.10
  6. Step 6: Final answer
    x = 22,385.86

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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.