Home / 31,106.29-42,918.99-19,003.66

Finding the Fourth Proportional to 31,106.29, 42,918.99 and 19,003.66

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Solution

The fourth proportional to 31,106.29, 42,918.99 and 19,003.66 is: 26,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,106.29 : 42,918.99 = 19,003.66 : x
  2. Step 2: Convert to fraction form
    31,106.29/42,918.99 = 19,003.66/x
  3. Step 3: Cross multiply
    31,106.29x = 42,918.99 × 19,003.66
  4. Step 4: Simplify right side
    31,106.29x = 815,617,893.50
  5. Step 5: Solve for x
    x = 815,617,893.50/31,106.29
  6. Step 6: Final answer
    x = 26,220.35

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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.