Home / 43,138.09-64,707.18-13,558.51

Finding the Fourth Proportional to 43,138.09, 64,707.18 and 13,558.51

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Solution

The fourth proportional to 43,138.09, 64,707.18 and 13,558.51 is: 20,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,138.09 : 64,707.18 = 13,558.51 : x
  2. Step 2: Convert to fraction form
    43,138.09/64,707.18 = 13,558.51/x
  3. Step 3: Cross multiply
    43,138.09x = 64,707.18 × 13,558.51
  4. Step 4: Simplify right side
    43,138.09x = 877,332,947.10
  5. Step 5: Solve for x
    x = 877,332,947.10/43,138.09
  6. Step 6: Final answer
    x = 20,337.78

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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.