Home / 13,707.90-18,912.29-8,925.66

Finding the Fourth Proportional to 13,707.90, 18,912.29 and 8,925.66

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Solution

The fourth proportional to 13,707.90, 18,912.29 and 8,925.66 is: 12,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.90 : 18,912.29 = 8,925.66 : x
  2. Step 2: Convert to fraction form
    13,707.90/18,912.29 = 8,925.66/x
  3. Step 3: Cross multiply
    13,707.90x = 18,912.29 × 8,925.66
  4. Step 4: Simplify right side
    13,707.90x = 168,804,625.73
  5. Step 5: Solve for x
    x = 168,804,625.73/13,707.90
  6. Step 6: Final answer
    x = 12,314.40

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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.