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Finding the Fourth Proportional to 19,362.60, 29,027.70 and 10,128.60

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Solution

The fourth proportional to 19,362.60, 29,027.70 and 10,128.60 is: 15,184.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,362.60 : 29,027.70 = 10,128.60 : x
  2. Step 2: Convert to fraction form
    19,362.60/29,027.70 = 10,128.60/x
  3. Step 3: Cross multiply
    19,362.60x = 29,027.70 × 10,128.60
  4. Step 4: Simplify right side
    19,362.60x = 294,009,962.22
  5. Step 5: Solve for x
    x = 294,009,962.22/19,362.60
  6. Step 6: Final answer
    x = 15,184.43

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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.