Finding the Fourth Proportional to 13,312,228.40, 18,365,657.04 and 7,729,522.02
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Solution
The fourth proportional to 13,312,228.40, 18,365,657.04 and 7,729,522.02 is: 10,663,710.56
Step by Step Solution
- Step 1: Write the proportion equation
13,312,228.40 : 18,365,657.04 = 7,729,522.02 : x - Step 2: Convert to fraction form
13,312,228.40/18,365,657.04 = 7,729,522.02/x - Step 3: Cross multiply
13,312,228.40x = 18,365,657.04 × 7,729,522.02 - Step 4: Simplify right side
13,312,228.40x = 141,957,750,502,448 - Step 5: Solve for x
x = 141,957,750,502,448/13,312,228.40 - Step 6: Final answer
x = 10,663,710.56
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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.