Home / 33,316.80-45,983.60-21,395.20

Finding the Fourth Proportional to 33,316.80, 45,983.60 and 21,395.20

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Solution

The fourth proportional to 33,316.80, 45,983.60 and 21,395.20 is: 29,529.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,316.80 : 45,983.60 = 21,395.20 : x
  2. Step 2: Convert to fraction form
    33,316.80/45,983.60 = 21,395.20/x
  3. Step 3: Cross multiply
    33,316.80x = 45,983.60 × 21,395.20
  4. Step 4: Simplify right side
    33,316.80x = 983,828,318.72
  5. Step 5: Solve for x
    x = 983,828,318.72/33,316.80
  6. Step 6: Final answer
    x = 29,529.50

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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.