Home / 20,259.52-30,389.36-7,776.64

Finding the Fourth Proportional to 20,259.52, 30,389.36 and 7,776.64

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Solution

The fourth proportional to 20,259.52, 30,389.36 and 7,776.64 is: 11,664.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.52 : 30,389.36 = 7,776.64 : x
  2. Step 2: Convert to fraction form
    20,259.52/30,389.36 = 7,776.64/x
  3. Step 3: Cross multiply
    20,259.52x = 30,389.36 × 7,776.64
  4. Step 4: Simplify right side
    20,259.52x = 236,327,112.55
  5. Step 5: Solve for x
    x = 236,327,112.55/20,259.52
  6. Step 6: Final answer
    x = 11,664.99

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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.