Home / 21,941.60-30,279.29-11,870.01

Finding the Fourth Proportional to 21,941.60, 30,279.29 and 11,870.01

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Solution

The fourth proportional to 21,941.60, 30,279.29 and 11,870.01 is: 16,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.60 : 30,279.29 = 11,870.01 : x
  2. Step 2: Convert to fraction form
    21,941.60/30,279.29 = 11,870.01/x
  3. Step 3: Cross multiply
    21,941.60x = 30,279.29 × 11,870.01
  4. Step 4: Simplify right side
    21,941.60x = 359,415,491.44
  5. Step 5: Solve for x
    x = 359,415,491.44/21,941.60
  6. Step 6: Final answer
    x = 16,380.55

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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.