Home / 21,950.37-30,291.70-12,881.16

Finding the Fourth Proportional to 21,950.37, 30,291.70 and 12,881.16

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Solution

The fourth proportional to 21,950.37, 30,291.70 and 12,881.16 is: 17,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.37 : 30,291.70 = 12,881.16 : x
  2. Step 2: Convert to fraction form
    21,950.37/30,291.70 = 12,881.16/x
  3. Step 3: Cross multiply
    21,950.37x = 30,291.70 × 12,881.16
  4. Step 4: Simplify right side
    21,950.37x = 390,192,126.44
  5. Step 5: Solve for x
    x = 390,192,126.44/21,950.37
  6. Step 6: Final answer
    x = 17,776.11

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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.