Home / 20,781,257.60-28,679,021.16-11,613,900.08

Finding the Fourth Proportional to 20,781,257.60, 28,679,021.16 and 11,613,900.08

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Solution

The fourth proportional to 20,781,257.60, 28,679,021.16 and 11,613,900.08 is: 16,027,677.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,257.60 : 28,679,021.16 = 11,613,900.08 : x
  2. Step 2: Convert to fraction form
    20,781,257.60/28,679,021.16 = 11,613,900.08/x
  3. Step 3: Cross multiply
    20,781,257.60x = 28,679,021.16 × 11,613,900.08
  4. Step 4: Simplify right side
    20,781,257.60x = 333,075,286,144,445.69
  5. Step 5: Solve for x
    x = 333,075,286,144,445.69/20,781,257.60
  6. Step 6: Final answer
    x = 16,027,677.08

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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.