Home / 19,865.78-27,381.85-19,339.91

Finding the Fourth Proportional to 19,865.78, 27,381.85 and 19,339.91

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Solution

The fourth proportional to 19,865.78, 27,381.85 and 19,339.91 is: 26,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.78 : 27,381.85 = 19,339.91 : x
  2. Step 2: Convert to fraction form
    19,865.78/27,381.85 = 19,339.91/x
  3. Step 3: Cross multiply
    19,865.78x = 27,381.85 × 19,339.91
  4. Step 4: Simplify right side
    19,865.78x = 529,562,586.08
  5. Step 5: Solve for x
    x = 529,562,586.08/19,865.78
  6. Step 6: Final answer
    x = 26,657.02

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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.