Finding the Fourth Proportional to 13,301,702.21, 18,356,340.93 and 7,190,130.71
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Solution
The fourth proportional to 13,301,702.21, 18,356,340.93 and 7,190,130.71 is: 9,922,375.99
Step by Step Solution
- Step 1: Write the proportion equation
13,301,702.21 : 18,356,340.93 = 7,190,130.71 : x - Step 2: Convert to fraction form
13,301,702.21/18,356,340.93 = 7,190,130.71/x - Step 3: Cross multiply
13,301,702.21x = 18,356,340.93 × 7,190,130.71 - Step 4: Simplify right side
13,301,702.21x = 131,984,490,662,950.83 - Step 5: Solve for x
x = 131,984,490,662,950.83/13,301,702.21 - Step 6: Final answer
x = 9,922,375.99
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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.