Finding the Fourth Proportional to 28,331,495.12, 39,092,585.64 and 15,939,868.88
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Solution
The fourth proportional to 28,331,495.12, 39,092,585.64 and 15,939,868.88 is: 21,994,274.80
Step by Step Solution
- Step 1: Write the proportion equation
28,331,495.12 : 39,092,585.64 = 15,939,868.88 : x - Step 2: Convert to fraction form
28,331,495.12/39,092,585.64 = 15,939,868.88/x - Step 3: Cross multiply
28,331,495.12x = 39,092,585.64 × 15,939,868.88 - Step 4: Simplify right side
28,331,495.12x = 623,130,689,281,770.88 - Step 5: Solve for x
x = 623,130,689,281,770.88/28,331,495.12 - Step 6: Final answer
x = 21,994,274.80
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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.