Home / 30,385.90-41,945.34-18,453.08

Finding the Fourth Proportional to 30,385.90, 41,945.34 and 18,453.08

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Solution

The fourth proportional to 30,385.90, 41,945.34 and 18,453.08 is: 25,473.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,385.90 : 41,945.34 = 18,453.08 : x
  2. Step 2: Convert to fraction form
    30,385.90/41,945.34 = 18,453.08/x
  3. Step 3: Cross multiply
    30,385.90x = 41,945.34 × 18,453.08
  4. Step 4: Simplify right side
    30,385.90x = 774,020,714.65
  5. Step 5: Solve for x
    x = 774,020,714.65/30,385.90
  6. Step 6: Final answer
    x = 25,473.02

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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.