Home / 53,021.41-79,511.18-21,425.50

Finding the Fourth Proportional to 53,021.41, 79,511.18 and 21,425.50

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Solution

The fourth proportional to 53,021.41, 79,511.18 and 21,425.50 is: 32,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,021.41 : 79,511.18 = 21,425.50 : x
  2. Step 2: Convert to fraction form
    53,021.41/79,511.18 = 21,425.50/x
  3. Step 3: Cross multiply
    53,021.41x = 79,511.18 × 21,425.50
  4. Step 4: Simplify right side
    53,021.41x = 1,703,566,787.09
  5. Step 5: Solve for x
    x = 1,703,566,787.09/53,021.41
  6. Step 6: Final answer
    x = 32,129.79

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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.