Home / 39,661.78-59,475.75-20,930.02

Finding the Fourth Proportional to 39,661.78, 59,475.75 and 20,930.02

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Solution

The fourth proportional to 39,661.78, 59,475.75 and 20,930.02 is: 31,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,661.78 : 59,475.75 = 20,930.02 : x
  2. Step 2: Convert to fraction form
    39,661.78/59,475.75 = 20,930.02/x
  3. Step 3: Cross multiply
    39,661.78x = 59,475.75 × 20,930.02
  4. Step 4: Simplify right side
    39,661.78x = 1,244,828,637.02
  5. Step 5: Solve for x
    x = 1,244,828,637.02/39,661.78
  6. Step 6: Final answer
    x = 31,386.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.