Home / 53,033.49-79,515.12-20,991.33

Finding the Fourth Proportional to 53,033.49, 79,515.12 and 20,991.33

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Solution

The fourth proportional to 53,033.49, 79,515.12 and 20,991.33 is: 31,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,033.49 : 79,515.12 = 20,991.33 : x
  2. Step 2: Convert to fraction form
    53,033.49/79,515.12 = 20,991.33/x
  3. Step 3: Cross multiply
    53,033.49x = 79,515.12 × 20,991.33
  4. Step 4: Simplify right side
    53,033.49x = 1,669,128,123.91
  5. Step 5: Solve for x
    x = 1,669,128,123.91/53,033.49
  6. Step 6: Final answer
    x = 31,473.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.