Finding the Fourth Proportional to 19,736,758.74, 27,228,475.94 and 15,378,278.34
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Solution
The fourth proportional to 19,736,758.74, 27,228,475.94 and 15,378,278.34 is: 21,215,595.09
Step by Step Solution
- Step 1: Write the proportion equation
19,736,758.74 : 27,228,475.94 = 15,378,278.34 : x - Step 2: Convert to fraction form
19,736,758.74/27,228,475.94 = 15,378,278.34/x - Step 3: Cross multiply
19,736,758.74x = 27,228,475.94 × 15,378,278.34 - Step 4: Simplify right side
19,736,758.74x = 418,727,081,779,313.12 - Step 5: Solve for x
x = 418,727,081,779,313.12/19,736,758.74 - Step 6: Final answer
x = 21,215,595.09
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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.