Finding the Fourth Proportional to 20,708,558.52, 28,577,897.07 and 11,415,924.44
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Solution
The fourth proportional to 20,708,558.52, 28,577,897.07 and 11,415,924.44 is: 15,754,023.31
Step by Step Solution
- Step 1: Write the proportion equation
20,708,558.52 : 28,577,897.07 = 11,415,924.44 : x - Step 2: Convert to fraction form
20,708,558.52/28,577,897.07 = 11,415,924.44/x - Step 3: Cross multiply
20,708,558.52x = 28,577,897.07 × 11,415,924.44 - Step 4: Simplify right side
20,708,558.52x = 326,243,113,526,685.31 - Step 5: Solve for x
x = 326,243,113,526,685.31/20,708,558.52 - Step 6: Final answer
x = 15,754,023.31
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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.