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Finding the Fourth Proportional to 30,391.08, 41,945.04 and 19,649.16

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Solution

The fourth proportional to 30,391.08, 41,945.04 and 19,649.16 is: 27,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.08 : 41,945.04 = 19,649.16 : x
  2. Step 2: Convert to fraction form
    30,391.08/41,945.04 = 19,649.16/x
  3. Step 3: Cross multiply
    30,391.08x = 41,945.04 × 19,649.16
  4. Step 4: Simplify right side
    30,391.08x = 824,184,802.17
  5. Step 5: Solve for x
    x = 824,184,802.17/30,391.08
  6. Step 6: Final answer
    x = 27,119.30

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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.