Home / 21,883.67-30,186.07-12,929.27

Finding the Fourth Proportional to 21,883.67, 30,186.07 and 12,929.27

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Solution

The fourth proportional to 21,883.67, 30,186.07 and 12,929.27 is: 17,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.67 : 30,186.07 = 12,929.27 : x
  2. Step 2: Convert to fraction form
    21,883.67/30,186.07 = 12,929.27/x
  3. Step 3: Cross multiply
    21,883.67x = 30,186.07 × 12,929.27
  4. Step 4: Simplify right side
    21,883.67x = 390,283,835.81
  5. Step 5: Solve for x
    x = 390,283,835.81/21,883.67
  6. Step 6: Final answer
    x = 17,834.48

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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.