Home / 15,143.45-20,884.67-10,603.80

Finding the Fourth Proportional to 15,143.45, 20,884.67 and 10,603.80

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Solution

The fourth proportional to 15,143.45, 20,884.67 and 10,603.80 is: 14,623.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.45 : 20,884.67 = 10,603.80 : x
  2. Step 2: Convert to fraction form
    15,143.45/20,884.67 = 10,603.80/x
  3. Step 3: Cross multiply
    15,143.45x = 20,884.67 × 10,603.80
  4. Step 4: Simplify right side
    15,143.45x = 221,456,810.73
  5. Step 5: Solve for x
    x = 221,456,810.73/15,143.45
  6. Step 6: Final answer
    x = 14,623.94

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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.