Home / 13,707.96-18,925.92-8,405.70

Finding the Fourth Proportional to 13,707.96, 18,925.92 and 8,405.70

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Solution

The fourth proportional to 13,707.96, 18,925.92 and 8,405.70 is: 11,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.96 : 18,925.92 = 8,405.70 : x
  2. Step 2: Convert to fraction form
    13,707.96/18,925.92 = 8,405.70/x
  3. Step 3: Cross multiply
    13,707.96x = 18,925.92 × 8,405.70
  4. Step 4: Simplify right side
    13,707.96x = 159,085,605.74
  5. Step 5: Solve for x
    x = 159,085,605.74/13,707.96
  6. Step 6: Final answer
    x = 11,605.35

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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.