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Finding the Fourth Proportional to 18,752.78, 25,866.58 and 12,027.76

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Solution

The fourth proportional to 18,752.78, 25,866.58 and 12,027.76 is: 16,590.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.78 : 25,866.58 = 12,027.76 : x
  2. Step 2: Convert to fraction form
    18,752.78/25,866.58 = 12,027.76/x
  3. Step 3: Cross multiply
    18,752.78x = 25,866.58 × 12,027.76
  4. Step 4: Simplify right side
    18,752.78x = 311,117,016.26
  5. Step 5: Solve for x
    x = 311,117,016.26/18,752.78
  6. Step 6: Final answer
    x = 16,590.45

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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.