Finding the Fourth Proportional to 18,718,649.74, 28,059,374.14 and 13,026,916.62
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Solution
The fourth proportional to 18,718,649.74, 28,059,374.14 and 13,026,916.62 is: 19,527,430.26
Step by Step Solution
- Step 1: Write the proportion equation
18,718,649.74 : 28,059,374.14 = 13,026,916.62 : x - Step 2: Convert to fraction form
18,718,649.74/28,059,374.14 = 13,026,916.62/x - Step 3: Cross multiply
18,718,649.74x = 28,059,374.14 × 13,026,916.62 - Step 4: Simplify right side
18,718,649.74x = 365,527,127,331,164.19 - Step 5: Solve for x
x = 365,527,127,331,164.19/18,718,649.74 - Step 6: Final answer
x = 19,527,430.26
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.