Home / 13,641.08-18,811.86-12,622.92

Finding the Fourth Proportional to 13,641.08, 18,811.86 and 12,622.92

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Solution

The fourth proportional to 13,641.08, 18,811.86 and 12,622.92 is: 17,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.08 : 18,811.86 = 12,622.92 : x
  2. Step 2: Convert to fraction form
    13,641.08/18,811.86 = 12,622.92/x
  3. Step 3: Cross multiply
    13,641.08x = 18,811.86 × 12,622.92
  4. Step 4: Simplify right side
    13,641.08x = 237,460,603.83
  5. Step 5: Solve for x
    x = 237,460,603.83/13,641.08
  6. Step 6: Final answer
    x = 17,407.76

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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.