Home / 15,749.49-21,733.49-9,781.04

Finding the Fourth Proportional to 15,749.49, 21,733.49 and 9,781.04

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Solution

The fourth proportional to 15,749.49, 21,733.49 and 9,781.04 is: 13,497.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.49 : 21,733.49 = 9,781.04 : x
  2. Step 2: Convert to fraction form
    15,749.49/21,733.49 = 9,781.04/x
  3. Step 3: Cross multiply
    15,749.49x = 21,733.49 × 9,781.04
  4. Step 4: Simplify right side
    15,749.49x = 212,575,977.46
  5. Step 5: Solve for x
    x = 212,575,977.46/15,749.49
  6. Step 6: Final answer
    x = 13,497.32

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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.