Home / 39,390.32-59,111.74-20,432.43

Finding the Fourth Proportional to 39,390.32, 59,111.74 and 20,432.43

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Solution

The fourth proportional to 39,390.32, 59,111.74 and 20,432.43 is: 30,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.32 : 59,111.74 = 20,432.43 : x
  2. Step 2: Convert to fraction form
    39,390.32/59,111.74 = 20,432.43/x
  3. Step 3: Cross multiply
    39,390.32x = 59,111.74 × 20,432.43
  4. Step 4: Simplify right side
    39,390.32x = 1,207,796,290.87
  5. Step 5: Solve for x
    x = 1,207,796,290.87/39,390.32
  6. Step 6: Final answer
    x = 30,662.26

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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.