Home / 13,645.19-20,445.93-12,332.99

Finding the Fourth Proportional to 13,645.19, 20,445.93 and 12,332.99

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Solution

The fourth proportional to 13,645.19, 20,445.93 and 12,332.99 is: 18,479.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.19 : 20,445.93 = 12,332.99 : x
  2. Step 2: Convert to fraction form
    13,645.19/20,445.93 = 12,332.99/x
  3. Step 3: Cross multiply
    13,645.19x = 20,445.93 × 12,332.99
  4. Step 4: Simplify right side
    13,645.19x = 252,159,450.23
  5. Step 5: Solve for x
    x = 252,159,450.23/13,645.19
  6. Step 6: Final answer
    x = 18,479.73

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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.