Finding the Fourth Proportional to 15,316,381.07, 21,136,606.16 and 8,440,863.14
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Solution
The fourth proportional to 15,316,381.07, 21,136,606.16 and 8,440,863.14 is: 11,648,391.28
Step by Step Solution
- Step 1: Write the proportion equation
15,316,381.07 : 21,136,606.16 = 8,440,863.14 : x - Step 2: Convert to fraction form
15,316,381.07/21,136,606.16 = 8,440,863.14/x - Step 3: Cross multiply
15,316,381.07x = 21,136,606.16 × 8,440,863.14 - Step 4: Simplify right side
15,316,381.07x = 178,411,199,732,384.75 - Step 5: Solve for x
x = 178,411,199,732,384.75/15,316,381.07 - Step 6: Final answer
x = 11,648,391.28
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1.5x scale
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.