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Finding the Fourth Proportional to 12,653.01, 17,460.86 and 6,987.65

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Solution

The fourth proportional to 12,653.01, 17,460.86 and 6,987.65 is: 9,642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,653.01 : 17,460.86 = 6,987.65 : x
  2. Step 2: Convert to fraction form
    12,653.01/17,460.86 = 6,987.65/x
  3. Step 3: Cross multiply
    12,653.01x = 17,460.86 × 6,987.65
  4. Step 4: Simplify right side
    12,653.01x = 122,010,256.14
  5. Step 5: Solve for x
    x = 122,010,256.14/12,653.01
  6. Step 6: Final answer
    x = 9,642.79

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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.