Home / 18,913.64-26,106.57-11,361.20

Finding the Fourth Proportional to 18,913.64, 26,106.57 and 11,361.20

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Solution

The fourth proportional to 18,913.64, 26,106.57 and 11,361.20 is: 15,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.64 : 26,106.57 = 11,361.20 : x
  2. Step 2: Convert to fraction form
    18,913.64/26,106.57 = 11,361.20/x
  3. Step 3: Cross multiply
    18,913.64x = 26,106.57 × 11,361.20
  4. Step 4: Simplify right side
    18,913.64x = 296,601,832.55
  5. Step 5: Solve for x
    x = 296,601,832.55/18,913.64
  6. Step 6: Final answer
    x = 15,681.91

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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.