Home / 18,928,919-26,121,908.34-10,780,915.16

Finding the Fourth Proportional to 18,928,919, 26,121,908.34 and 10,780,915.16

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Solution

The fourth proportional to 18,928,919, 26,121,908.34 and 10,780,915.16 is: 14,877,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,919 : 26,121,908.34 = 10,780,915.16 : x
  2. Step 2: Convert to fraction form
    18,928,919/26,121,908.34 = 10,780,915.16/x
  3. Step 3: Cross multiply
    18,928,919x = 26,121,908.34 × 10,780,915.16
  4. Step 4: Simplify right side
    18,928,919x = 281,618,077,630,836.44
  5. Step 5: Solve for x
    x = 281,618,077,630,836.44/18,928,919
  6. Step 6: Final answer
    x = 14,877,662.99

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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.