Home / 30,975.93-42,756.84-18,228.42

Finding the Fourth Proportional to 30,975.93, 42,756.84 and 18,228.42

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Solution

The fourth proportional to 30,975.93, 42,756.84 and 18,228.42 is: 25,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.93 : 42,756.84 = 18,228.42 : x
  2. Step 2: Convert to fraction form
    30,975.93/42,756.84 = 18,228.42/x
  3. Step 3: Cross multiply
    30,975.93x = 42,756.84 × 18,228.42
  4. Step 4: Simplify right side
    30,975.93x = 779,389,637.39
  5. Step 5: Solve for x
    x = 779,389,637.39/30,975.93
  6. Step 6: Final answer
    x = 25,161.14

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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.