Home / 15,749.32-21,726.48-9,788

Finding the Fourth Proportional to 15,749.32, 21,726.48 and 9,788

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Solution

The fourth proportional to 15,749.32, 21,726.48 and 9,788 is: 13,502.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.32 : 21,726.48 = 9,788 : x
  2. Step 2: Convert to fraction form
    15,749.32/21,726.48 = 9,788/x
  3. Step 3: Cross multiply
    15,749.32x = 21,726.48 × 9,788
  4. Step 4: Simplify right side
    15,749.32x = 212,658,786.24
  5. Step 5: Solve for x
    x = 212,658,786.24/15,749.32
  6. Step 6: Final answer
    x = 13,502.73

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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.