Home / 39,143.80-58,748.10-18,116.20

Finding the Fourth Proportional to 39,143.80, 58,748.10 and 18,116.20

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Solution

The fourth proportional to 39,143.80, 58,748.10 and 18,116.20 is: 27,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.80 : 58,748.10 = 18,116.20 : x
  2. Step 2: Convert to fraction form
    39,143.80/58,748.10 = 18,116.20/x
  3. Step 3: Cross multiply
    39,143.80x = 58,748.10 × 18,116.20
  4. Step 4: Simplify right side
    39,143.80x = 1,064,292,329.22
  5. Step 5: Solve for x
    x = 1,064,292,329.22/39,143.80
  6. Step 6: Final answer
    x = 27,189.30

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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.