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Finding the Fourth Proportional to 15,798,590.78, 21,802,728.60 and 8,829,268.13

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Solution

The fourth proportional to 15,798,590.78, 21,802,728.60 and 8,829,268.13 is: 12,184,766.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798,590.78 : 21,802,728.60 = 8,829,268.13 : x
  2. Step 2: Convert to fraction form
    15,798,590.78/21,802,728.60 = 8,829,268.13/x
  3. Step 3: Cross multiply
    15,798,590.78x = 21,802,728.60 × 8,829,268.13
  4. Step 4: Simplify right side
    15,798,590.78x = 192,502,136,775,019.56
  5. Step 5: Solve for x
    x = 192,502,136,775,019.56/15,798,590.78
  6. Step 6: Final answer
    x = 12,184,766.32

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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.