Home / 28,968.93-39,967.80-16,220.24

Finding the Fourth Proportional to 28,968.93, 39,967.80 and 16,220.24

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Solution

The fourth proportional to 28,968.93, 39,967.80 and 16,220.24 is: 22,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,968.93 : 39,967.80 = 16,220.24 : x
  2. Step 2: Convert to fraction form
    28,968.93/39,967.80 = 16,220.24/x
  3. Step 3: Cross multiply
    28,968.93x = 39,967.80 × 16,220.24
  4. Step 4: Simplify right side
    28,968.93x = 648,287,108.43
  5. Step 5: Solve for x
    x = 648,287,108.43/28,968.93
  6. Step 6: Final answer
    x = 22,378.70

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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.