Home / 12,775.79-17,623.40-7,670.00

Finding the Fourth Proportional to 12,775.79, 17,623.40 and 7,670.00

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Solution

The fourth proportional to 12,775.79, 17,623.40 and 7,670.00 is: 10,580.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.79 : 17,623.40 = 7,670.00 : x
  2. Step 2: Convert to fraction form
    12,775.79/17,623.40 = 7,670.00/x
  3. Step 3: Cross multiply
    12,775.79x = 17,623.40 × 7,670.00
  4. Step 4: Simplify right side
    12,775.79x = 135,171,351.53
  5. Step 5: Solve for x
    x = 135,171,351.53/12,775.79
  6. Step 6: Final answer
    x = 10,580.28

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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.