Finding the Fourth Proportional to 15,316,408.13, 21,136,643.42 and 8,440,890.12
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Solution
The fourth proportional to 15,316,408.13, 21,136,643.42 and 8,440,890.12 is: 11,648,428.48
Step by Step Solution
- Step 1: Write the proportion equation
15,316,408.13 : 21,136,643.42 = 8,440,890.12 : x - Step 2: Convert to fraction form
15,316,408.13/21,136,643.42 = 8,440,890.12/x - Step 3: Cross multiply
15,316,408.13x = 21,136,643.42 × 8,440,890.12 - Step 4: Simplify right side
15,316,408.13x = 178,412,084,571,636.53 - Step 5: Solve for x
x = 178,412,084,571,636.53/15,316,408.13 - Step 6: Final answer
x = 11,648,428.48
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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.