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Finding the Fourth Proportional to 31,058.65, 42,859.65 and 16,911.46

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Solution

The fourth proportional to 31,058.65, 42,859.65 and 16,911.46 is: 23,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,058.65 : 42,859.65 = 16,911.46 : x
  2. Step 2: Convert to fraction form
    31,058.65/42,859.65 = 16,911.46/x
  3. Step 3: Cross multiply
    31,058.65x = 42,859.65 × 16,911.46
  4. Step 4: Simplify right side
    31,058.65x = 724,819,256.59
  5. Step 5: Solve for x
    x = 724,819,256.59/31,058.65
  6. Step 6: Final answer
    x = 23,337.11

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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.