Finding the Fourth Proportional to 14,736,569.21, 20,335,988.59 and 8,458,129.95
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Solution
The fourth proportional to 14,736,569.21, 20,335,988.59 and 8,458,129.95 is: 11,671,945.60
Step by Step Solution
- Step 1: Write the proportion equation
14,736,569.21 : 20,335,988.59 = 8,458,129.95 : x - Step 2: Convert to fraction form
14,736,569.21/20,335,988.59 = 8,458,129.95/x - Step 3: Cross multiply
14,736,569.21x = 20,335,988.59 × 8,458,129.95 - Step 4: Simplify right side
14,736,569.21x = 172,004,434,155,937.25 - Step 5: Solve for x
x = 172,004,434,155,937.25/14,736,569.21 - Step 6: Final answer
x = 11,671,945.60
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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.