Home / 20,070.90-30,106.56-8,384.10

Finding the Fourth Proportional to 20,070.90, 30,106.56 and 8,384.10

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Solution

The fourth proportional to 20,070.90, 30,106.56 and 8,384.10 is: 12,576.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.90 : 30,106.56 = 8,384.10 : x
  2. Step 2: Convert to fraction form
    20,070.90/30,106.56 = 8,384.10/x
  3. Step 3: Cross multiply
    20,070.90x = 30,106.56 × 8,384.10
  4. Step 4: Simplify right side
    20,070.90x = 252,416,409.70
  5. Step 5: Solve for x
    x = 252,416,409.70/20,070.90
  6. Step 6: Final answer
    x = 12,576.24

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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.