Home / 21,955.86-30,299.67-13,005.36

Finding the Fourth Proportional to 21,955.86, 30,299.67 and 13,005.36

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Solution

The fourth proportional to 21,955.86, 30,299.67 and 13,005.36 is: 17,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.86 : 30,299.67 = 13,005.36 : x
  2. Step 2: Convert to fraction form
    21,955.86/30,299.67 = 13,005.36/x
  3. Step 3: Cross multiply
    21,955.86x = 30,299.67 × 13,005.36
  4. Step 4: Simplify right side
    21,955.86x = 394,058,116.23
  5. Step 5: Solve for x
    x = 394,058,116.23/21,955.86
  6. Step 6: Final answer
    x = 17,947.74

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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.