Home / 53,205.20-79,807.80-21,615.20

Finding the Fourth Proportional to 53,205.20, 79,807.80 and 21,615.20

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Solution

The fourth proportional to 53,205.20, 79,807.80 and 21,615.20 is: 32,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,205.20 : 79,807.80 = 21,615.20 : x
  2. Step 2: Convert to fraction form
    53,205.20/79,807.80 = 21,615.20/x
  3. Step 3: Cross multiply
    53,205.20x = 79,807.80 × 21,615.20
  4. Step 4: Simplify right side
    53,205.20x = 1,725,061,558.56
  5. Step 5: Solve for x
    x = 1,725,061,558.56/53,205.20
  6. Step 6: Final answer
    x = 32,422.80

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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.