Finding the Fourth Proportional to 27,816,876.19, 38,389,587.21 and 15,430,962.98
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Solution
The fourth proportional to 27,816,876.19, 38,389,587.21 and 15,430,962.98 is: 21,296,003.73
Step by Step Solution
- Step 1: Write the proportion equation
27,816,876.19 : 38,389,587.21 = 15,430,962.98 : x - Step 2: Convert to fraction form
27,816,876.19/38,389,587.21 = 15,430,962.98/x - Step 3: Cross multiply
27,816,876.19x = 38,389,587.21 × 15,430,962.98 - Step 4: Simplify right side
27,816,876.19x = 592,388,299,054,991.50 - Step 5: Solve for x
x = 592,388,299,054,991.50/27,816,876.19 - Step 6: Final answer
x = 21,296,003.73
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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.