Home / 20,388.51-30,559.71-11,007.63

Finding the Fourth Proportional to 20,388.51, 30,559.71 and 11,007.63

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Solution

The fourth proportional to 20,388.51, 30,559.71 and 11,007.63 is: 16,499.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.51 : 30,559.71 = 11,007.63 : x
  2. Step 2: Convert to fraction form
    20,388.51/30,559.71 = 11,007.63/x
  3. Step 3: Cross multiply
    20,388.51x = 30,559.71 × 11,007.63
  4. Step 4: Simplify right side
    20,388.51x = 336,390,021.87
  5. Step 5: Solve for x
    x = 336,390,021.87/20,388.51
  6. Step 6: Final answer
    x = 16,499.00

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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.