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Finding the Fourth Proportional to 12,659.70, 19,001.16 and 6,424.14

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Solution

The fourth proportional to 12,659.70, 19,001.16 and 6,424.14 is: 9,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.70 : 19,001.16 = 6,424.14 : x
  2. Step 2: Convert to fraction form
    12,659.70/19,001.16 = 6,424.14/x
  3. Step 3: Cross multiply
    12,659.70x = 19,001.16 × 6,424.14
  4. Step 4: Simplify right side
    12,659.70x = 122,066,112.00
  5. Step 5: Solve for x
    x = 122,066,112.00/12,659.70
  6. Step 6: Final answer
    x = 9,642.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.