Home / 30,421.56-41,977.62-16,991.13

Finding the Fourth Proportional to 30,421.56, 41,977.62 and 16,991.13

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Solution

The fourth proportional to 30,421.56, 41,977.62 and 16,991.13 is: 23,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.56 : 41,977.62 = 16,991.13 : x
  2. Step 2: Convert to fraction form
    30,421.56/41,977.62 = 16,991.13/x
  3. Step 3: Cross multiply
    30,421.56x = 41,977.62 × 16,991.13
  4. Step 4: Simplify right side
    30,421.56x = 713,247,198.51
  5. Step 5: Solve for x
    x = 713,247,198.51/30,421.56
  6. Step 6: Final answer
    x = 23,445.45

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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.