Home / 20,851.16-28,771.98-16,612.98

Finding the Fourth Proportional to 20,851.16, 28,771.98 and 16,612.98

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Solution

The fourth proportional to 20,851.16, 28,771.98 and 16,612.98 is: 22,923.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.16 : 28,771.98 = 16,612.98 : x
  2. Step 2: Convert to fraction form
    20,851.16/28,771.98 = 16,612.98/x
  3. Step 3: Cross multiply
    20,851.16x = 28,771.98 × 16,612.98
  4. Step 4: Simplify right side
    20,851.16x = 477,988,328.30
  5. Step 5: Solve for x
    x = 477,988,328.30/20,851.16
  6. Step 6: Final answer
    x = 22,923.82

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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.