Home / 13,405.02-18,500.23-11,162.94

Finding the Fourth Proportional to 13,405.02, 18,500.23 and 11,162.94

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Solution

The fourth proportional to 13,405.02, 18,500.23 and 11,162.94 is: 15,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.02 : 18,500.23 = 11,162.94 : x
  2. Step 2: Convert to fraction form
    13,405.02/18,500.23 = 11,162.94/x
  3. Step 3: Cross multiply
    13,405.02x = 18,500.23 × 11,162.94
  4. Step 4: Simplify right side
    13,405.02x = 206,516,957.48
  5. Step 5: Solve for x
    x = 206,516,957.48/13,405.02
  6. Step 6: Final answer
    x = 15,405.94

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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.