Home / 30,945.16-42,698.10-19,010.44

Finding the Fourth Proportional to 30,945.16, 42,698.10 and 19,010.44

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Solution

The fourth proportional to 30,945.16, 42,698.10 and 19,010.44 is: 26,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.16 : 42,698.10 = 19,010.44 : x
  2. Step 2: Convert to fraction form
    30,945.16/42,698.10 = 19,010.44/x
  3. Step 3: Cross multiply
    30,945.16x = 42,698.10 × 19,010.44
  4. Step 4: Simplify right side
    30,945.16x = 811,709,668.16
  5. Step 5: Solve for x
    x = 811,709,668.16/30,945.16
  6. Step 6: Final answer
    x = 26,230.59

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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.