Home / 20,955.93-28,916.91-12,002.55

Finding the Fourth Proportional to 20,955.93, 28,916.91 and 12,002.55

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Solution

The fourth proportional to 20,955.93, 28,916.91 and 12,002.55 is: 16,562.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.93 : 28,916.91 = 12,002.55 : x
  2. Step 2: Convert to fraction form
    20,955.93/28,916.91 = 12,002.55/x
  3. Step 3: Cross multiply
    20,955.93x = 28,916.91 × 12,002.55
  4. Step 4: Simplify right side
    20,955.93x = 347,076,658.12
  5. Step 5: Solve for x
    x = 347,076,658.12/20,955.93
  6. Step 6: Final answer
    x = 16,562.22

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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.