Home / 31,058.40-42,859.31-16,911.21

Finding the Fourth Proportional to 31,058.40, 42,859.31 and 16,911.21

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Solution

The fourth proportional to 31,058.40, 42,859.31 and 16,911.21 is: 23,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,058.40 : 42,859.31 = 16,911.21 : x
  2. Step 2: Convert to fraction form
    31,058.40/42,859.31 = 16,911.21/x
  3. Step 3: Cross multiply
    31,058.40x = 42,859.31 × 16,911.21
  4. Step 4: Simplify right side
    31,058.40x = 724,802,707.31
  5. Step 5: Solve for x
    x = 724,802,707.31/31,058.40
  6. Step 6: Final answer
    x = 23,336.77

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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.