Finding the Fourth Proportional to 20,487,069.36, 28,272,097.68 and 11,319,646.80
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Solution
The fourth proportional to 20,487,069.36, 28,272,097.68 and 11,319,646.80 is: 15,621,080.52
Step by Step Solution
- Step 1: Write the proportion equation
20,487,069.36 : 28,272,097.68 = 11,319,646.80 : x - Step 2: Convert to fraction form
20,487,069.36/28,272,097.68 = 11,319,646.80/x - Step 3: Cross multiply
20,487,069.36x = 28,272,097.68 × 11,319,646.80 - Step 4: Simplify right side
20,487,069.36x = 320,030,160,032,699.44 - Step 5: Solve for x
x = 320,030,160,032,699.44/20,487,069.36 - Step 6: Final answer
x = 15,621,080.52
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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.