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Finding the Fourth Proportional to 43,903.91, 65,870.64 and 13,923.05

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Solution

The fourth proportional to 43,903.91, 65,870.64 and 13,923.05 is: 20,889.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,903.91 : 65,870.64 = 13,923.05 : x
  2. Step 2: Convert to fraction form
    43,903.91/65,870.64 = 13,923.05/x
  3. Step 3: Cross multiply
    43,903.91x = 65,870.64 × 13,923.05
  4. Step 4: Simplify right side
    43,903.91x = 917,119,884.90
  5. Step 5: Solve for x
    x = 917,119,884.90/43,903.91
  6. Step 6: Final answer
    x = 20,889.26

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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.