Home / 20,195.34-30,290.58-5,405.40

Finding the Fourth Proportional to 20,195.34, 30,290.58 and 5,405.40

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Solution

The fourth proportional to 20,195.34, 30,290.58 and 5,405.40 is: 8,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.34 : 30,290.58 = 5,405.40 : x
  2. Step 2: Convert to fraction form
    20,195.34/30,290.58 = 5,405.40/x
  3. Step 3: Cross multiply
    20,195.34x = 30,290.58 × 5,405.40
  4. Step 4: Simplify right side
    20,195.34x = 163,732,701.13
  5. Step 5: Solve for x
    x = 163,732,701.13/20,195.34
  6. Step 6: Final answer
    x = 8,107.45

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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.