Home / 28,785.90-43,164.06-13,190.16

Finding the Fourth Proportional to 28,785.90, 43,164.06 and 13,190.16

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Solution

The fourth proportional to 28,785.90, 43,164.06 and 13,190.16 is: 19,778.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.90 : 43,164.06 = 13,190.16 : x
  2. Step 2: Convert to fraction form
    28,785.90/43,164.06 = 13,190.16/x
  3. Step 3: Cross multiply
    28,785.90x = 43,164.06 × 13,190.16
  4. Step 4: Simplify right side
    28,785.90x = 569,340,857.65
  5. Step 5: Solve for x
    x = 569,340,857.65/28,785.90
  6. Step 6: Final answer
    x = 19,778.46

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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.