Home / 13,077.14-18,046.40-7,108.79

Finding the Fourth Proportional to 13,077.14, 18,046.40 and 7,108.79

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Solution

The fourth proportional to 13,077.14, 18,046.40 and 7,108.79 is: 9,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.14 : 18,046.40 = 7,108.79 : x
  2. Step 2: Convert to fraction form
    13,077.14/18,046.40 = 7,108.79/x
  3. Step 3: Cross multiply
    13,077.14x = 18,046.40 × 7,108.79
  4. Step 4: Simplify right side
    13,077.14x = 128,287,942.08
  5. Step 5: Solve for x
    x = 128,287,942.08/13,077.14
  6. Step 6: Final answer
    x = 9,810.10

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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.