Home / 13,127.56-18,115.31-7,461.51

Finding the Fourth Proportional to 13,127.56, 18,115.31 and 7,461.51

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Solution

The fourth proportional to 13,127.56, 18,115.31 and 7,461.51 is: 10,296.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.56 : 18,115.31 = 7,461.51 : x
  2. Step 2: Convert to fraction form
    13,127.56/18,115.31 = 7,461.51/x
  3. Step 3: Cross multiply
    13,127.56x = 18,115.31 × 7,461.51
  4. Step 4: Simplify right side
    13,127.56x = 135,167,566.72
  5. Step 5: Solve for x
    x = 135,167,566.72/13,127.56
  6. Step 6: Final answer
    x = 10,296.47

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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.