Home / 20,916.01-31,295.59-12,451.55

Finding the Fourth Proportional to 20,916.01, 31,295.59 and 12,451.55

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Solution

The fourth proportional to 20,916.01, 31,295.59 and 12,451.55 is: 18,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.01 : 31,295.59 = 12,451.55 : x
  2. Step 2: Convert to fraction form
    20,916.01/31,295.59 = 12,451.55/x
  3. Step 3: Cross multiply
    20,916.01x = 31,295.59 × 12,451.55
  4. Step 4: Simplify right side
    20,916.01x = 389,678,480.00
  5. Step 5: Solve for x
    x = 389,678,480.00/20,916.01
  6. Step 6: Final answer
    x = 18,630.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.