Finding the Fourth Proportional to 19,138,117.63, 28,703,261.70 and 5,487,607.21
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Solution
The fourth proportional to 19,138,117.63, 28,703,261.70 and 5,487,607.21 is: 8,230,288.31
Step by Step Solution
- Step 1: Write the proportion equation
19,138,117.63 : 28,703,261.70 = 5,487,607.21 : x - Step 2: Convert to fraction form
19,138,117.63/28,703,261.70 = 5,487,607.21/x - Step 3: Cross multiply
19,138,117.63x = 28,703,261.70 × 5,487,607.21 - Step 4: Simplify right side
19,138,117.63x = 157,512,225,855,436.84 - Step 5: Solve for x
x = 157,512,225,855,436.84/19,138,117.63 - Step 6: Final answer
x = 8,230,288.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.