Home / 20,555.08-30,810.74-10,684.42

Finding the Fourth Proportional to 20,555.08, 30,810.74 and 10,684.42

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Solution

The fourth proportional to 20,555.08, 30,810.74 and 10,684.42 is: 16,015.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.08 : 30,810.74 = 10,684.42 : x
  2. Step 2: Convert to fraction form
    20,555.08/30,810.74 = 10,684.42/x
  3. Step 3: Cross multiply
    20,555.08x = 30,810.74 × 10,684.42
  4. Step 4: Simplify right side
    20,555.08x = 329,194,886.67
  5. Step 5: Solve for x
    x = 329,194,886.67/20,555.08
  6. Step 6: Final answer
    x = 16,015.26

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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.