Finding the Fourth Proportional to 15,057,271.04, 20,778,988.80 and 8,181,774.08
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Solution
The fourth proportional to 15,057,271.04, 20,778,988.80 and 8,181,774.08 is: 11,290,823.65
Step by Step Solution
- Step 1: Write the proportion equation
15,057,271.04 : 20,778,988.80 = 8,181,774.08 : x - Step 2: Convert to fraction form
15,057,271.04/20,778,988.80 = 8,181,774.08/x - Step 3: Cross multiply
15,057,271.04x = 20,778,988.80 × 8,181,774.08 - Step 4: Simplify right side
15,057,271.04x = 170,008,991,972,450.31 - Step 5: Solve for x
x = 170,008,991,972,450.31/15,057,271.04 - Step 6: Final answer
x = 11,290,823.65
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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.