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Finding the Fourth Proportional to 30,477.19, 45,701.42 and 19,786.25

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Solution

The fourth proportional to 30,477.19, 45,701.42 and 19,786.25 is: 29,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,477.19 : 45,701.42 = 19,786.25 : x
  2. Step 2: Convert to fraction form
    30,477.19/45,701.42 = 19,786.25/x
  3. Step 3: Cross multiply
    30,477.19x = 45,701.42 × 19,786.25
  4. Step 4: Simplify right side
    30,477.19x = 904,259,656.69
  5. Step 5: Solve for x
    x = 904,259,656.69/30,477.19
  6. Step 6: Final answer
    x = 29,670.05

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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.