Home / 39,603.16-54,653.26-21,699

Finding the Fourth Proportional to 39,603.16, 54,653.26 and 21,699

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Solution

The fourth proportional to 39,603.16, 54,653.26 and 21,699 is: 29,945.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,603.16 : 54,653.26 = 21,699 : x
  2. Step 2: Convert to fraction form
    39,603.16/54,653.26 = 21,699/x
  3. Step 3: Cross multiply
    39,603.16x = 54,653.26 × 21,699
  4. Step 4: Simplify right side
    39,603.16x = 1,185,921,088.74
  5. Step 5: Solve for x
    x = 1,185,921,088.74/39,603.16
  6. Step 6: Final answer
    x = 29,945.11

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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.