Finding the Fourth Proportional to 21,616,306.61, 29,827,557.07 and 12,912,631.63
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Solution
The fourth proportional to 21,616,306.61, 29,827,557.07 and 12,912,631.63 is: 17,817,671.81
Step by Step Solution
- Step 1: Write the proportion equation
21,616,306.61 : 29,827,557.07 = 12,912,631.63 : x - Step 2: Convert to fraction form
21,616,306.61/29,827,557.07 = 12,912,631.63/x - Step 3: Cross multiply
21,616,306.61x = 29,827,557.07 × 12,912,631.63 - Step 4: Simplify right side
21,616,306.61x = 385,152,256,760,861.62 - Step 5: Solve for x
x = 385,152,256,760,861.62/21,616,306.61 - Step 6: Final answer
x = 17,817,671.81
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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.