Home / 13,133.46-18,130.80-8,358.24

Finding the Fourth Proportional to 13,133.46, 18,130.80 and 8,358.24

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Solution

The fourth proportional to 13,133.46, 18,130.80 and 8,358.24 is: 11,538.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.46 : 18,130.80 = 8,358.24 : x
  2. Step 2: Convert to fraction form
    13,133.46/18,130.80 = 8,358.24/x
  3. Step 3: Cross multiply
    13,133.46x = 18,130.80 × 8,358.24
  4. Step 4: Simplify right side
    13,133.46x = 151,541,577.79
  5. Step 5: Solve for x
    x = 151,541,577.79/13,133.46
  6. Step 6: Final answer
    x = 11,538.59

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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.