Home / 15,653.27-21,603.29-8,939.85

Finding the Fourth Proportional to 15,653.27, 21,603.29 and 8,939.85

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Solution

The fourth proportional to 15,653.27, 21,603.29 and 8,939.85 is: 12,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.27 : 21,603.29 = 8,939.85 : x
  2. Step 2: Convert to fraction form
    15,653.27/21,603.29 = 8,939.85/x
  3. Step 3: Cross multiply
    15,653.27x = 21,603.29 × 8,939.85
  4. Step 4: Simplify right side
    15,653.27x = 193,130,127.41
  5. Step 5: Solve for x
    x = 193,130,127.41/15,653.27
  6. Step 6: Final answer
    x = 12,338.01

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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.