Home / 20,213.10-30,312.45-7,065.90

Finding the Fourth Proportional to 20,213.10, 30,312.45 and 7,065.90

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Solution

The fourth proportional to 20,213.10, 30,312.45 and 7,065.90 is: 10,596.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.10 : 30,312.45 = 7,065.90 : x
  2. Step 2: Convert to fraction form
    20,213.10/30,312.45 = 7,065.90/x
  3. Step 3: Cross multiply
    20,213.10x = 30,312.45 × 7,065.90
  4. Step 4: Simplify right side
    20,213.10x = 214,184,740.46
  5. Step 5: Solve for x
    x = 214,184,740.46/20,213.10
  6. Step 6: Final answer
    x = 10,596.33

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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.