Home / 15,647.76-21,603.24-13,898.16

Finding the Fourth Proportional to 15,647.76, 21,603.24 and 13,898.16

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Solution

The fourth proportional to 15,647.76, 21,603.24 and 13,898.16 is: 19,187.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.76 : 21,603.24 = 13,898.16 : x
  2. Step 2: Convert to fraction form
    15,647.76/21,603.24 = 13,898.16/x
  3. Step 3: Cross multiply
    15,647.76x = 21,603.24 × 13,898.16
  4. Step 4: Simplify right side
    15,647.76x = 300,245,286.04
  5. Step 5: Solve for x
    x = 300,245,286.04/15,647.76
  6. Step 6: Final answer
    x = 19,187.75

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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.