Home / 31,100.45-42,918.62-16,953.30

Finding the Fourth Proportional to 31,100.45, 42,918.62 and 16,953.30

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Solution

The fourth proportional to 31,100.45, 42,918.62 and 16,953.30 is: 23,395.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,100.45 : 42,918.62 = 16,953.30 : x
  2. Step 2: Convert to fraction form
    31,100.45/42,918.62 = 16,953.30/x
  3. Step 3: Cross multiply
    31,100.45x = 42,918.62 × 16,953.30
  4. Step 4: Simplify right side
    31,100.45x = 727,612,155.68
  5. Step 5: Solve for x
    x = 727,612,155.68/31,100.45
  6. Step 6: Final answer
    x = 23,395.55

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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.