Finding the Fourth Proportional to 19,686,528.70, 27,164,145.63 and 13,149,673.18
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Solution
The fourth proportional to 19,686,528.70, 27,164,145.63 and 13,149,673.18 is: 18,144,368.81
Step by Step Solution
- Step 1: Write the proportion equation
19,686,528.70 : 27,164,145.63 = 13,149,673.18 : x - Step 2: Convert to fraction form
19,686,528.70/27,164,145.63 = 13,149,673.18/x - Step 3: Cross multiply
19,686,528.70x = 27,164,145.63 × 13,149,673.18 - Step 4: Simplify right side
19,686,528.70x = 357,199,637,248,425.19 - Step 5: Solve for x
x = 357,199,637,248,425.19/19,686,528.70 - Step 6: Final answer
x = 18,144,368.81
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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.