Home / 30,206.78-41,686.24-18,272.30

Finding the Fourth Proportional to 30,206.78, 41,686.24 and 18,272.30

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Solution

The fourth proportional to 30,206.78, 41,686.24 and 18,272.30 is: 25,216.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,206.78 : 41,686.24 = 18,272.30 : x
  2. Step 2: Convert to fraction form
    30,206.78/41,686.24 = 18,272.30/x
  3. Step 3: Cross multiply
    30,206.78x = 41,686.24 × 18,272.30
  4. Step 4: Simplify right side
    30,206.78x = 761,703,483.15
  5. Step 5: Solve for x
    x = 761,703,483.15/30,206.78
  6. Step 6: Final answer
    x = 25,216.31

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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.