Home / 30,070.72-41,478.24-20,644.48

Finding the Fourth Proportional to 30,070.72, 41,478.24 and 20,644.48

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Solution

The fourth proportional to 30,070.72, 41,478.24 and 20,644.48 is: 28,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,070.72 : 41,478.24 = 20,644.48 : x
  2. Step 2: Convert to fraction form
    30,070.72/41,478.24 = 20,644.48/x
  3. Step 3: Cross multiply
    30,070.72x = 41,478.24 × 20,644.48
  4. Step 4: Simplify right side
    30,070.72x = 856,296,696.12
  5. Step 5: Solve for x
    x = 856,296,696.12/30,070.72
  6. Step 6: Final answer
    x = 28,476.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.