Finding the Fourth Proportional to 15,316,873.76, 21,136,336.08 and 8,440,971.68
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Solution
The fourth proportional to 15,316,873.76, 21,136,336.08 and 8,440,971.68 is: 11,648,017.54
Step by Step Solution
- Step 1: Write the proportion equation
15,316,873.76 : 21,136,336.08 = 8,440,971.68 : x - Step 2: Convert to fraction form
15,316,873.76/21,136,336.08 = 8,440,971.68/x - Step 3: Cross multiply
15,316,873.76x = 21,136,336.08 × 8,440,971.68 - Step 4: Simplify right side
15,316,873.76x = 178,411,214,270,242.19 - Step 5: Solve for x
x = 178,411,214,270,242.19/15,316,873.76 - Step 6: Final answer
x = 11,648,017.54
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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.