Home / 21,325.62-31,984.65-12,550.26

Finding the Fourth Proportional to 21,325.62, 31,984.65 and 12,550.26

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Solution

The fourth proportional to 21,325.62, 31,984.65 and 12,550.26 is: 18,823.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.62 : 31,984.65 = 12,550.26 : x
  2. Step 2: Convert to fraction form
    21,325.62/31,984.65 = 12,550.26/x
  3. Step 3: Cross multiply
    21,325.62x = 31,984.65 × 12,550.26
  4. Step 4: Simplify right side
    21,325.62x = 401,415,673.51
  5. Step 5: Solve for x
    x = 401,415,673.51/21,325.62
  6. Step 6: Final answer
    x = 18,823.17

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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.