Home / 18,840.06-28,260.09-7,153.28

Finding the Fourth Proportional to 18,840.06, 28,260.09 and 7,153.28

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Solution

The fourth proportional to 18,840.06, 28,260.09 and 7,153.28 is: 10,729.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.06 : 28,260.09 = 7,153.28 : x
  2. Step 2: Convert to fraction form
    18,840.06/28,260.09 = 7,153.28/x
  3. Step 3: Cross multiply
    18,840.06x = 28,260.09 × 7,153.28
  4. Step 4: Simplify right side
    18,840.06x = 202,152,300.83
  5. Step 5: Solve for x
    x = 202,152,300.83/18,840.06
  6. Step 6: Final answer
    x = 10,729.92

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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.