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Finding the Fourth Proportional to 43,238.93, 64,865.07 and 18,279.06

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Solution

The fourth proportional to 43,238.93, 64,865.07 and 18,279.06 is: 27,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,238.93 : 64,865.07 = 18,279.06 : x
  2. Step 2: Convert to fraction form
    43,238.93/64,865.07 = 18,279.06/x
  3. Step 3: Cross multiply
    43,238.93x = 64,865.07 × 18,279.06
  4. Step 4: Simplify right side
    43,238.93x = 1,185,672,506.43
  5. Step 5: Solve for x
    x = 1,185,672,506.43/43,238.93
  6. Step 6: Final answer
    x = 27,421.41

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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.