Home / 30,213.60-45,302.67-9,147.30

Finding the Fourth Proportional to 30,213.60, 45,302.67 and 9,147.30

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Solution

The fourth proportional to 30,213.60, 45,302.67 and 9,147.30 is: 13,715.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.60 : 45,302.67 = 9,147.30 : x
  2. Step 2: Convert to fraction form
    30,213.60/45,302.67 = 9,147.30/x
  3. Step 3: Cross multiply
    30,213.60x = 45,302.67 × 9,147.30
  4. Step 4: Simplify right side
    30,213.60x = 414,397,113.29
  5. Step 5: Solve for x
    x = 414,397,113.29/30,213.60
  6. Step 6: Final answer
    x = 13,715.58

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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.