Home / 13,110.16-18,090.66-7,803.94

Finding the Fourth Proportional to 13,110.16, 18,090.66 and 7,803.94

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Solution

The fourth proportional to 13,110.16, 18,090.66 and 7,803.94 is: 10,768.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.16 : 18,090.66 = 7,803.94 : x
  2. Step 2: Convert to fraction form
    13,110.16/18,090.66 = 7,803.94/x
  3. Step 3: Cross multiply
    13,110.16x = 18,090.66 × 7,803.94
  4. Step 4: Simplify right side
    13,110.16x = 141,178,425.20
  5. Step 5: Solve for x
    x = 141,178,425.20/13,110.16
  6. Step 6: Final answer
    x = 10,768.63

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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.