Home / 30,749.36-42,434.98-18,812.48

Finding the Fourth Proportional to 30,749.36, 42,434.98 and 18,812.48

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Solution

The fourth proportional to 30,749.36, 42,434.98 and 18,812.48 is: 25,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,749.36 : 42,434.98 = 18,812.48 : x
  2. Step 2: Convert to fraction form
    30,749.36/42,434.98 = 18,812.48/x
  3. Step 3: Cross multiply
    30,749.36x = 42,434.98 × 18,812.48
  4. Step 4: Simplify right side
    30,749.36x = 798,307,212.55
  5. Step 5: Solve for x
    x = 798,307,212.55/30,749.36
  6. Step 6: Final answer
    x = 25,961.75

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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.