Home / 42,813.90-64,252.39-20,324.65

Finding the Fourth Proportional to 42,813.90, 64,252.39 and 20,324.65

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Solution

The fourth proportional to 42,813.90, 64,252.39 and 20,324.65 is: 30,501.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,813.90 : 64,252.39 = 20,324.65 : x
  2. Step 2: Convert to fraction form
    42,813.90/64,252.39 = 20,324.65/x
  3. Step 3: Cross multiply
    42,813.90x = 64,252.39 × 20,324.65
  4. Step 4: Simplify right side
    42,813.90x = 1,305,907,549.86
  5. Step 5: Solve for x
    x = 1,305,907,549.86/42,813.90
  6. Step 6: Final answer
    x = 30,501.95

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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.