Finding the Fourth Proportional to 19,138,617.36, 26,415,724.86 and 12,613,406.40
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Solution
The fourth proportional to 19,138,617.36, 26,415,724.86 and 12,613,406.40 is: 17,409,422.36
Step by Step Solution
- Step 1: Write the proportion equation
19,138,617.36 : 26,415,724.86 = 12,613,406.40 : x - Step 2: Convert to fraction form
19,138,617.36/26,415,724.86 = 12,613,406.40/x - Step 3: Cross multiply
19,138,617.36x = 26,415,724.86 × 12,613,406.40 - Step 4: Simplify right side
19,138,617.36x = 333,192,273,009,763.12 - Step 5: Solve for x
x = 333,192,273,009,763.12/19,138,617.36 - Step 6: Final answer
x = 17,409,422.36
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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.