Finding the Fourth Proportional to 13,731,045.49, 18,949,728.51 and 7,619,473.99
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Solution
The fourth proportional to 13,731,045.49, 18,949,728.51 and 7,619,473.99 is: 10,515,365.61
Step by Step Solution
- Step 1: Write the proportion equation
13,731,045.49 : 18,949,728.51 = 7,619,473.99 : x - Step 2: Convert to fraction form
13,731,045.49/18,949,728.51 = 7,619,473.99/x - Step 3: Cross multiply
13,731,045.49x = 18,949,728.51 × 7,619,473.99 - Step 4: Simplify right side
13,731,045.49x = 144,386,963,499,506.47 - Step 5: Solve for x
x = 144,386,963,499,506.47/13,731,045.49 - Step 6: Final answer
x = 10,515,365.61
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1.5x scale
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.