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Finding the Fourth Proportional to 18,703.31, 28,054.89 and 4,852.31

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Solution

The fourth proportional to 18,703.31, 28,054.89 and 4,852.31 is: 7,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.31 : 28,054.89 = 4,852.31 : x
  2. Step 2: Convert to fraction form
    18,703.31/28,054.89 = 4,852.31/x
  3. Step 3: Cross multiply
    18,703.31x = 28,054.89 × 4,852.31
  4. Step 4: Simplify right side
    18,703.31x = 136,130,883.02
  5. Step 5: Solve for x
    x = 136,130,883.02/18,703.31
  6. Step 6: Final answer
    x = 7,278.44

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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.