Home / 13,164.48-19,729.20-6,490.79

Finding the Fourth Proportional to 13,164.48, 19,729.20 and 6,490.79

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Solution

The fourth proportional to 13,164.48, 19,729.20 and 6,490.79 is: 9,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.48 : 19,729.20 = 6,490.79 : x
  2. Step 2: Convert to fraction form
    13,164.48/19,729.20 = 6,490.79/x
  3. Step 3: Cross multiply
    13,164.48x = 19,729.20 × 6,490.79
  4. Step 4: Simplify right side
    13,164.48x = 128,058,094.07
  5. Step 5: Solve for x
    x = 128,058,094.07/13,164.48
  6. Step 6: Final answer
    x = 9,727.55

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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.