Home / 20,912.02-28,851.55-11,953.19

Finding the Fourth Proportional to 20,912.02, 28,851.55 and 11,953.19

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Solution

The fourth proportional to 20,912.02, 28,851.55 and 11,953.19 is: 16,491.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.02 : 28,851.55 = 11,953.19 : x
  2. Step 2: Convert to fraction form
    20,912.02/28,851.55 = 11,953.19/x
  3. Step 3: Cross multiply
    20,912.02x = 28,851.55 × 11,953.19
  4. Step 4: Simplify right side
    20,912.02x = 344,868,058.94
  5. Step 5: Solve for x
    x = 344,868,058.94/20,912.02
  6. Step 6: Final answer
    x = 16,491.38

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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.