Home / 31,530.36-47,296.53-11,805.15

Finding the Fourth Proportional to 31,530.36, 47,296.53 and 11,805.15

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Solution

The fourth proportional to 31,530.36, 47,296.53 and 11,805.15 is: 17,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530.36 : 47,296.53 = 11,805.15 : x
  2. Step 2: Convert to fraction form
    31,530.36/47,296.53 = 11,805.15/x
  3. Step 3: Cross multiply
    31,530.36x = 47,296.53 × 11,805.15
  4. Step 4: Simplify right side
    31,530.36x = 558,342,631.13
  5. Step 5: Solve for x
    x = 558,342,631.13/31,530.36
  6. Step 6: Final answer
    x = 17,708.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.