Home / 13,430.58-18,529.20-8,323.79

Finding the Fourth Proportional to 13,430.58, 18,529.20 and 8,323.79

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Solution

The fourth proportional to 13,430.58, 18,529.20 and 8,323.79 is: 11,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.58 : 18,529.20 = 8,323.79 : x
  2. Step 2: Convert to fraction form
    13,430.58/18,529.20 = 8,323.79/x
  3. Step 3: Cross multiply
    13,430.58x = 18,529.20 × 8,323.79
  4. Step 4: Simplify right side
    13,430.58x = 154,233,169.67
  5. Step 5: Solve for x
    x = 154,233,169.67/13,430.58
  6. Step 6: Final answer
    x = 11,483.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.