Home / 18,290.16-27,430.98-5,143.80

Finding the Fourth Proportional to 18,290.16, 27,430.98 and 5,143.80

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Solution

The fourth proportional to 18,290.16, 27,430.98 and 5,143.80 is: 7,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.16 : 27,430.98 = 5,143.80 : x
  2. Step 2: Convert to fraction form
    18,290.16/27,430.98 = 5,143.80/x
  3. Step 3: Cross multiply
    18,290.16x = 27,430.98 × 5,143.80
  4. Step 4: Simplify right side
    18,290.16x = 141,099,474.92
  5. Step 5: Solve for x
    x = 141,099,474.92/18,290.16
  6. Step 6: Final answer
    x = 7,714.50

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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.