Home / 39,390.51-59,055.47-20,394.78

Finding the Fourth Proportional to 39,390.51, 59,055.47 and 20,394.78

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Solution

The fourth proportional to 39,390.51, 59,055.47 and 20,394.78 is: 30,576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.51 : 59,055.47 = 20,394.78 : x
  2. Step 2: Convert to fraction form
    39,390.51/59,055.47 = 20,394.78/x
  3. Step 3: Cross multiply
    39,390.51x = 59,055.47 × 20,394.78
  4. Step 4: Simplify right side
    39,390.51x = 1,204,423,318.45
  5. Step 5: Solve for x
    x = 1,204,423,318.45/39,390.51
  6. Step 6: Final answer
    x = 30,576.48

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1.5x scale

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.