Home / 21,477,100.45-29,638,403.46-11,819,308.45

Finding the Fourth Proportional to 21,477,100.45, 29,638,403.46 and 11,819,308.45

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Solution

The fourth proportional to 21,477,100.45, 29,638,403.46 and 11,819,308.45 is: 16,310,648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477,100.45 : 29,638,403.46 = 11,819,308.45 : x
  2. Step 2: Convert to fraction form
    21,477,100.45/29,638,403.46 = 11,819,308.45/x
  3. Step 3: Cross multiply
    21,477,100.45x = 29,638,403.46 × 11,819,308.45
  4. Step 4: Simplify right side
    21,477,100.45x = 350,305,432,459,287.25
  5. Step 5: Solve for x
    x = 350,305,432,459,287.25/21,477,100.45
  6. Step 6: Final answer
    x = 16,310,648.32

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Double scale
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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.