Home / 30,838.95-42,548.36-21,282.03

Finding the Fourth Proportional to 30,838.95, 42,548.36 and 21,282.03

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Solution

The fourth proportional to 30,838.95, 42,548.36 and 21,282.03 is: 29,362.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.95 : 42,548.36 = 21,282.03 : x
  2. Step 2: Convert to fraction form
    30,838.95/42,548.36 = 21,282.03/x
  3. Step 3: Cross multiply
    30,838.95x = 42,548.36 × 21,282.03
  4. Step 4: Simplify right side
    30,838.95x = 905,515,367.56
  5. Step 5: Solve for x
    x = 905,515,367.56/30,838.95
  6. Step 6: Final answer
    x = 29,362.72

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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.