Home / 13,276.31-18,318.86-7,900.54

Finding the Fourth Proportional to 13,276.31, 18,318.86 and 7,900.54

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Solution

The fourth proportional to 13,276.31, 18,318.86 and 7,900.54 is: 10,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.31 : 18,318.86 = 7,900.54 : x
  2. Step 2: Convert to fraction form
    13,276.31/18,318.86 = 7,900.54/x
  3. Step 3: Cross multiply
    13,276.31x = 18,318.86 × 7,900.54
  4. Step 4: Simplify right side
    13,276.31x = 144,728,830.51
  5. Step 5: Solve for x
    x = 144,728,830.51/13,276.31
  6. Step 6: Final answer
    x = 10,901.29

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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.