Finding the Fourth Proportional to 15,548,066.28, 21,457,292.58 and 8,578,709.80
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Solution
The fourth proportional to 15,548,066.28, 21,457,292.58 and 8,578,709.80 is: 11,839,149.82
Step by Step Solution
- Step 1: Write the proportion equation
15,548,066.28 : 21,457,292.58 = 8,578,709.80 : x - Step 2: Convert to fraction form
15,548,066.28/21,457,292.58 = 8,578,709.80/x - Step 3: Cross multiply
15,548,066.28x = 21,457,292.58 × 8,578,709.80 - Step 4: Simplify right side
15,548,066.28x = 184,075,886,137,513.28 - Step 5: Solve for x
x = 184,075,886,137,513.28/15,548,066.28 - Step 6: Final answer
x = 11,839,149.82
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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.