Home / 13,342.20-18,390.93-10,505.07

Finding the Fourth Proportional to 13,342.20, 18,390.93 and 10,505.07

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Solution

The fourth proportional to 13,342.20, 18,390.93 and 10,505.07 is: 14,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.20 : 18,390.93 = 10,505.07 : x
  2. Step 2: Convert to fraction form
    13,342.20/18,390.93 = 10,505.07/x
  3. Step 3: Cross multiply
    13,342.20x = 18,390.93 × 10,505.07
  4. Step 4: Simplify right side
    13,342.20x = 193,198,007.02
  5. Step 5: Solve for x
    x = 193,198,007.02/13,342.20
  6. Step 6: Final answer
    x = 14,480.22

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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.