Home / 21,769.30-30,044.91-13,276.34

Finding the Fourth Proportional to 21,769.30, 30,044.91 and 13,276.34

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Solution

The fourth proportional to 21,769.30, 30,044.91 and 13,276.34 is: 18,323.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.30 : 30,044.91 = 13,276.34 : x
  2. Step 2: Convert to fraction form
    21,769.30/30,044.91 = 13,276.34/x
  3. Step 3: Cross multiply
    21,769.30x = 30,044.91 × 13,276.34
  4. Step 4: Simplify right side
    21,769.30x = 398,886,440.43
  5. Step 5: Solve for x
    x = 398,886,440.43/21,769.30
  6. Step 6: Final answer
    x = 18,323.35

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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.