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Finding the Fourth Proportional to 31,503.48, 43,465.48 and 18,746.44

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Solution

The fourth proportional to 31,503.48, 43,465.48 and 18,746.44 is: 25,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,503.48 : 43,465.48 = 18,746.44 : x
  2. Step 2: Convert to fraction form
    31,503.48/43,465.48 = 18,746.44/x
  3. Step 3: Cross multiply
    31,503.48x = 43,465.48 × 18,746.44
  4. Step 4: Simplify right side
    31,503.48x = 814,822,857.36
  5. Step 5: Solve for x
    x = 814,822,857.36/31,503.48
  6. Step 6: Final answer
    x = 25,864.53

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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.