Finding the Fourth Proportional to 21,616,319.96, 29,827,575.49 and 12,912,644.99
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Solution
The fourth proportional to 21,616,319.96, 29,827,575.49 and 12,912,644.99 is: 17,817,690.23
Step by Step Solution
- Step 1: Write the proportion equation
21,616,319.96 : 29,827,575.49 = 12,912,644.99 : x - Step 2: Convert to fraction form
21,616,319.96/29,827,575.49 = 12,912,644.99/x - Step 3: Cross multiply
21,616,319.96x = 29,827,575.49 × 12,912,644.99 - Step 4: Simplify right side
21,616,319.96x = 385,152,893,113,513.69 - Step 5: Solve for x
x = 385,152,893,113,513.69/21,616,319.96 - Step 6: Final answer
x = 17,817,690.23
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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.