Home / 42,218.04-63,309.24-12,640.08

Finding the Fourth Proportional to 42,218.04, 63,309.24 and 12,640.08

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Solution

The fourth proportional to 42,218.04, 63,309.24 and 12,640.08 is: 18,954.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,218.04 : 63,309.24 = 12,640.08 : x
  2. Step 2: Convert to fraction form
    42,218.04/63,309.24 = 12,640.08/x
  3. Step 3: Cross multiply
    42,218.04x = 63,309.24 × 12,640.08
  4. Step 4: Simplify right side
    42,218.04x = 800,233,858.34
  5. Step 5: Solve for x
    x = 800,233,858.34/42,218.04
  6. Step 6: Final answer
    x = 18,954.78

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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.