Home / 13,506.39-18,636.35-7,841.79

Finding the Fourth Proportional to 13,506.39, 18,636.35 and 7,841.79

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Solution

The fourth proportional to 13,506.39, 18,636.35 and 7,841.79 is: 10,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.39 : 18,636.35 = 7,841.79 : x
  2. Step 2: Convert to fraction form
    13,506.39/18,636.35 = 7,841.79/x
  3. Step 3: Cross multiply
    13,506.39x = 18,636.35 × 7,841.79
  4. Step 4: Simplify right side
    13,506.39x = 146,142,303.86
  5. Step 5: Solve for x
    x = 146,142,303.86/13,506.39
  6. Step 6: Final answer
    x = 10,820.23

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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.