Home / 31,636.79-43,657.38-18,208.47

Finding the Fourth Proportional to 31,636.79, 43,657.38 and 18,208.47

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Solution

The fourth proportional to 31,636.79, 43,657.38 and 18,208.47 is: 25,126.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,636.79 : 43,657.38 = 18,208.47 : x
  2. Step 2: Convert to fraction form
    31,636.79/43,657.38 = 18,208.47/x
  3. Step 3: Cross multiply
    31,636.79x = 43,657.38 × 18,208.47
  4. Step 4: Simplify right side
    31,636.79x = 794,934,094.01
  5. Step 5: Solve for x
    x = 794,934,094.01/31,636.79
  6. Step 6: Final answer
    x = 25,126.89

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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.