Finding the Fourth Proportional to 23,128,868.80, 31,917,807.68 and 12,816,259.84
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Solution
The fourth proportional to 23,128,868.80, 31,917,807.68 and 12,816,259.84 is: 17,686,421.26
Step by Step Solution
- Step 1: Write the proportion equation
23,128,868.80 : 31,917,807.68 = 12,816,259.84 : x - Step 2: Convert to fraction form
23,128,868.80/31,917,807.68 = 12,816,259.84/x - Step 3: Cross multiply
23,128,868.80x = 31,917,807.68 × 12,816,259.84 - Step 4: Simplify right side
23,128,868.80x = 409,066,916,750,027.56 - Step 5: Solve for x
x = 409,066,916,750,027.56/23,128,868.80 - Step 6: Final answer
x = 17,686,421.26
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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.