Finding the Fourth Proportional to 12,776,656.90, 19,164,985.35 and 8,241,693.70
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Solution
The fourth proportional to 12,776,656.90, 19,164,985.35 and 8,241,693.70 is: 12,362,540.55
Step by Step Solution
- Step 1: Write the proportion equation
12,776,656.90 : 19,164,985.35 = 8,241,693.70 : x - Step 2: Convert to fraction form
12,776,656.90/19,164,985.35 = 8,241,693.70/x - Step 3: Cross multiply
12,776,656.90x = 19,164,985.35 × 8,241,693.70 - Step 4: Simplify right side
12,776,656.90x = 157,951,939,019,687.31 - Step 5: Solve for x
x = 157,951,939,019,687.31/12,776,656.90 - Step 6: Final answer
x = 12,362,540.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.