Home / 20,083.20-27,715.02-11,130.81

Finding the Fourth Proportional to 20,083.20, 27,715.02 and 11,130.81

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Solution

The fourth proportional to 20,083.20, 27,715.02 and 11,130.81 is: 15,360.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.20 : 27,715.02 = 11,130.81 : x
  2. Step 2: Convert to fraction form
    20,083.20/27,715.02 = 11,130.81/x
  3. Step 3: Cross multiply
    20,083.20x = 27,715.02 × 11,130.81
  4. Step 4: Simplify right side
    20,083.20x = 308,490,621.77
  5. Step 5: Solve for x
    x = 308,490,621.77/20,083.20
  6. Step 6: Final answer
    x = 15,360.63

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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.