Home / 21,941.64-30,279.69-12,510.81

Finding the Fourth Proportional to 21,941.64, 30,279.69 and 12,510.81

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Solution

The fourth proportional to 21,941.64, 30,279.69 and 12,510.81 is: 17,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.64 : 30,279.69 = 12,510.81 : x
  2. Step 2: Convert to fraction form
    21,941.64/30,279.69 = 12,510.81/x
  3. Step 3: Cross multiply
    21,941.64x = 30,279.69 × 12,510.81
  4. Step 4: Simplify right side
    21,941.64x = 378,823,448.45
  5. Step 5: Solve for x
    x = 378,823,448.45/21,941.64
  6. Step 6: Final answer
    x = 17,265.05

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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.