Home / 31,311.51-43,210.41-16,971.80

Finding the Fourth Proportional to 31,311.51, 43,210.41 and 16,971.80

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Solution

The fourth proportional to 31,311.51, 43,210.41 and 16,971.80 is: 23,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,311.51 : 43,210.41 = 16,971.80 : x
  2. Step 2: Convert to fraction form
    31,311.51/43,210.41 = 16,971.80/x
  3. Step 3: Cross multiply
    31,311.51x = 43,210.41 × 16,971.80
  4. Step 4: Simplify right side
    31,311.51x = 733,358,220.39
  5. Step 5: Solve for x
    x = 733,358,220.39/31,311.51
  6. Step 6: Final answer
    x = 23,421.36

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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.