Finding the Fourth Proportional to 28,539,658.08, 39,384,527.04 and 15,486,585.12
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Solution
The fourth proportional to 28,539,658.08, 39,384,527.04 and 15,486,585.12 is: 21,371,378.34
Step by Step Solution
- Step 1: Write the proportion equation
28,539,658.08 : 39,384,527.04 = 15,486,585.12 : x - Step 2: Convert to fraction form
28,539,658.08/39,384,527.04 = 15,486,585.12/x - Step 3: Cross multiply
28,539,658.08x = 39,384,527.04 × 15,486,585.12 - Step 4: Simplify right side
28,539,658.08x = 609,931,830,415,901.62 - Step 5: Solve for x
x = 609,931,830,415,901.62/28,539,658.08 - Step 6: Final answer
x = 21,371,378.34
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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.