Finding the Fourth Proportional to 28,488,629.68, 39,314,253.54 and 15,436,241.80
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Solution
The fourth proportional to 28,488,629.68, 39,314,253.54 and 15,436,241.80 is: 21,301,983.66
Step by Step Solution
- Step 1: Write the proportion equation
28,488,629.68 : 39,314,253.54 = 15,436,241.80 : x - Step 2: Convert to fraction form
28,488,629.68/39,314,253.54 = 15,436,241.80/x - Step 3: Cross multiply
28,488,629.68x = 39,314,253.54 × 15,436,241.80 - Step 4: Simplify right side
28,488,629.68x = 606,864,323,829,946 - Step 5: Solve for x
x = 606,864,323,829,946/28,488,629.68 - Step 6: Final answer
x = 21,301,983.66
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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.