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Finding the Fourth Proportional to 18,376,919.20, 27,565,378.80 and 14,072,247.10

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Solution

The fourth proportional to 18,376,919.20, 27,565,378.80 and 14,072,247.10 is: 21,108,370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376,919.20 : 27,565,378.80 = 14,072,247.10 : x
  2. Step 2: Convert to fraction form
    18,376,919.20/27,565,378.80 = 14,072,247.10/x
  3. Step 3: Cross multiply
    18,376,919.20x = 27,565,378.80 × 14,072,247.10
  4. Step 4: Simplify right side
    18,376,919.20x = 387,906,821,878,701.50
  5. Step 5: Solve for x
    x = 387,906,821,878,701.50/18,376,919.20
  6. Step 6: Final answer
    x = 21,108,370.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.