Home / 13,345.02-20,021.09-11,111.76

Finding the Fourth Proportional to 13,345.02, 20,021.09 and 11,111.76

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Solution

The fourth proportional to 13,345.02, 20,021.09 and 11,111.76 is: 16,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.02 : 20,021.09 = 11,111.76 : x
  2. Step 2: Convert to fraction form
    13,345.02/20,021.09 = 11,111.76/x
  3. Step 3: Cross multiply
    13,345.02x = 20,021.09 × 11,111.76
  4. Step 4: Simplify right side
    13,345.02x = 222,469,491.46
  5. Step 5: Solve for x
    x = 222,469,491.46/13,345.02
  6. Step 6: Final answer
    x = 16,670.60

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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.