Home / 21,292.95-31,896.23-12,048.15

Finding the Fourth Proportional to 21,292.95, 31,896.23 and 12,048.15

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Solution

The fourth proportional to 21,292.95, 31,896.23 and 12,048.15 is: 18,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.95 : 31,896.23 = 12,048.15 : x
  2. Step 2: Convert to fraction form
    21,292.95/31,896.23 = 12,048.15/x
  3. Step 3: Cross multiply
    21,292.95x = 31,896.23 × 12,048.15
  4. Step 4: Simplify right side
    21,292.95x = 384,290,503.23
  5. Step 5: Solve for x
    x = 384,290,503.23/21,292.95
  6. Step 6: Final answer
    x = 18,047.78

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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.