Home / 42,713.22-64,083.54-20,528.21

Finding the Fourth Proportional to 42,713.22, 64,083.54 and 20,528.21

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Solution

The fourth proportional to 42,713.22, 64,083.54 and 20,528.21 is: 30,798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,713.22 : 64,083.54 = 20,528.21 : x
  2. Step 2: Convert to fraction form
    42,713.22/64,083.54 = 20,528.21/x
  3. Step 3: Cross multiply
    42,713.22x = 64,083.54 × 20,528.21
  4. Step 4: Simplify right side
    42,713.22x = 1,315,520,046.25
  5. Step 5: Solve for x
    x = 1,315,520,046.25/42,713.22
  6. Step 6: Final answer
    x = 30,798.90

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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.