Finding the Fourth Proportional to 21,616,328.16, 29,827,586.75 and 12,912,653.16
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Solution
The fourth proportional to 21,616,328.16, 29,827,586.75 and 12,912,653.16 is: 17,817,701.48
Step by Step Solution
- Step 1: Write the proportion equation
21,616,328.16 : 29,827,586.75 = 12,912,653.16 : x - Step 2: Convert to fraction form
21,616,328.16/29,827,586.75 = 12,912,653.16/x - Step 3: Cross multiply
21,616,328.16x = 29,827,586.75 × 12,912,653.16 - Step 4: Simplify right side
21,616,328.16x = 385,153,282,237,998.38 - Step 5: Solve for x
x = 385,153,282,237,998.38/21,616,328.16 - Step 6: Final answer
x = 17,817,701.48
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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.