Home / 39,873.81-55,024.56-21,968.76

Finding the Fourth Proportional to 39,873.81, 55,024.56 and 21,968.76

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Solution

The fourth proportional to 39,873.81, 55,024.56 and 21,968.76 is: 30,316.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,873.81 : 55,024.56 = 21,968.76 : x
  2. Step 2: Convert to fraction form
    39,873.81/55,024.56 = 21,968.76/x
  3. Step 3: Cross multiply
    39,873.81x = 55,024.56 × 21,968.76
  4. Step 4: Simplify right side
    39,873.81x = 1,208,821,352.75
  5. Step 5: Solve for x
    x = 1,208,821,352.75/39,873.81
  6. Step 6: Final answer
    x = 30,316.17

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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.