Home / 13,333.55-18,403.86-7,668.92

Finding the Fourth Proportional to 13,333.55, 18,403.86 and 7,668.92

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Solution

The fourth proportional to 13,333.55, 18,403.86 and 7,668.92 is: 10,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,333.55 : 18,403.86 = 7,668.92 : x
  2. Step 2: Convert to fraction form
    13,333.55/18,403.86 = 7,668.92/x
  3. Step 3: Cross multiply
    13,333.55x = 18,403.86 × 7,668.92
  4. Step 4: Simplify right side
    13,333.55x = 141,137,638.01
  5. Step 5: Solve for x
    x = 141,137,638.01/13,333.55
  6. Step 6: Final answer
    x = 10,585.15

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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.