Home / 12,631.08-17,430.79-6,888.54

Finding the Fourth Proportional to 12,631.08, 17,430.79 and 6,888.54

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Solution

The fourth proportional to 12,631.08, 17,430.79 and 6,888.54 is: 9,506.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.08 : 17,430.79 = 6,888.54 : x
  2. Step 2: Convert to fraction form
    12,631.08/17,430.79 = 6,888.54/x
  3. Step 3: Cross multiply
    12,631.08x = 17,430.79 × 6,888.54
  4. Step 4: Simplify right side
    12,631.08x = 120,072,694.15
  5. Step 5: Solve for x
    x = 120,072,694.15/12,631.08
  6. Step 6: Final answer
    x = 9,506.13

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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.