Home / 15,653.37-21,603.86-9,686.96

Finding the Fourth Proportional to 15,653.37, 21,603.86 and 9,686.96

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Solution

The fourth proportional to 15,653.37, 21,603.86 and 9,686.96 is: 13,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.37 : 21,603.86 = 9,686.96 : x
  2. Step 2: Convert to fraction form
    15,653.37/21,603.86 = 9,686.96/x
  3. Step 3: Cross multiply
    15,653.37x = 21,603.86 × 9,686.96
  4. Step 4: Simplify right side
    15,653.37x = 209,275,673.66
  5. Step 5: Solve for x
    x = 209,275,673.66/15,653.37
  6. Step 6: Final answer
    x = 13,369.37

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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.