Home / 21,941.87-30,279.65-11,870.24

Finding the Fourth Proportional to 21,941.87, 30,279.65 and 11,870.24

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Solution

The fourth proportional to 21,941.87, 30,279.65 and 11,870.24 is: 16,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.87 : 30,279.65 = 11,870.24 : x
  2. Step 2: Convert to fraction form
    21,941.87/30,279.65 = 11,870.24/x
  3. Step 3: Cross multiply
    21,941.87x = 30,279.65 × 11,870.24
  4. Step 4: Simplify right side
    21,941.87x = 359,426,501.87
  5. Step 5: Solve for x
    x = 359,426,501.87/21,941.87
  6. Step 6: Final answer
    x = 16,380.85

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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.