Finding the Fourth Proportional to 15,167,696.68, 20,931,495.42 and 8,292,179.08
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Solution
The fourth proportional to 15,167,696.68, 20,931,495.42 and 8,292,179.08 is: 11,443,247.59
Step by Step Solution
- Step 1: Write the proportion equation
15,167,696.68 : 20,931,495.42 = 8,292,179.08 : x - Step 2: Convert to fraction form
15,167,696.68/20,931,495.42 = 8,292,179.08/x - Step 3: Cross multiply
15,167,696.68x = 20,931,495.42 × 8,292,179.08 - Step 4: Simplify right side
15,167,696.68x = 173,567,708,434,839.84 - Step 5: Solve for x
x = 173,567,708,434,839.84/15,167,696.68 - Step 6: Final answer
x = 11,443,247.59
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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.