Home / 12,848.06-17,731.64-7,812.65

Finding the Fourth Proportional to 12,848.06, 17,731.64 and 7,812.65

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Solution

The fourth proportional to 12,848.06, 17,731.64 and 7,812.65 is: 10,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,848.06 : 17,731.64 = 7,812.65 : x
  2. Step 2: Convert to fraction form
    12,848.06/17,731.64 = 7,812.65/x
  3. Step 3: Cross multiply
    12,848.06x = 17,731.64 × 7,812.65
  4. Step 4: Simplify right side
    12,848.06x = 138,531,008.59
  5. Step 5: Solve for x
    x = 138,531,008.59/12,848.06
  6. Step 6: Final answer
    x = 10,782.25

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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.