Home / 20,403.84-30,579.84-9,316.56

Finding the Fourth Proportional to 20,403.84, 30,579.84 and 9,316.56

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Solution

The fourth proportional to 20,403.84, 30,579.84 and 9,316.56 is: 13,963.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.84 : 30,579.84 = 9,316.56 : x
  2. Step 2: Convert to fraction form
    20,403.84/30,579.84 = 9,316.56/x
  3. Step 3: Cross multiply
    20,403.84x = 30,579.84 × 9,316.56
  4. Step 4: Simplify right side
    20,403.84x = 284,898,914.15
  5. Step 5: Solve for x
    x = 284,898,914.15/20,403.84
  6. Step 6: Final answer
    x = 13,963.00

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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.