Home / 39,115.21-53,971.78-22,985.15

Finding the Fourth Proportional to 39,115.21, 53,971.78 and 22,985.15

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Solution

The fourth proportional to 39,115.21, 53,971.78 and 22,985.15 is: 31,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,115.21 : 53,971.78 = 22,985.15 : x
  2. Step 2: Convert to fraction form
    39,115.21/53,971.78 = 22,985.15/x
  3. Step 3: Cross multiply
    39,115.21x = 53,971.78 × 22,985.15
  4. Step 4: Simplify right side
    39,115.21x = 1,240,549,413.79
  5. Step 5: Solve for x
    x = 1,240,549,413.79/39,115.21
  6. Step 6: Final answer
    x = 31,715.27

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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.