Finding the Fourth Proportional to 28,153,546.84, 38,852,493.78 and 15,930,403.84
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Solution
The fourth proportional to 28,153,546.84, 38,852,493.78 and 15,930,403.84 is: 21,984,296.32
Step by Step Solution
- Step 1: Write the proportion equation
28,153,546.84 : 38,852,493.78 = 15,930,403.84 : x - Step 2: Convert to fraction form
28,153,546.84/38,852,493.78 = 15,930,403.84/x - Step 3: Cross multiply
28,153,546.84x = 38,852,493.78 × 15,930,403.84 - Step 4: Simplify right side
28,153,546.84x = 618,935,916,106,488.12 - Step 5: Solve for x
x = 618,935,916,106,488.12/28,153,546.84 - Step 6: Final answer
x = 21,984,296.32
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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.