Finding the Fourth Proportional to 21,919,814.66, 30,249,403.07 and 12,130,933.88
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Solution
The fourth proportional to 21,919,814.66, 30,249,403.07 and 12,130,933.88 is: 16,740,721.31
Step by Step Solution
- Step 1: Write the proportion equation
21,919,814.66 : 30,249,403.07 = 12,130,933.88 : x - Step 2: Convert to fraction form
21,919,814.66/30,249,403.07 = 12,130,933.88/x - Step 3: Cross multiply
21,919,814.66x = 30,249,403.07 × 12,130,933.88 - Step 4: Simplify right side
21,919,814.66x = 366,953,508,339,737.31 - Step 5: Solve for x
x = 366,953,508,339,737.31/21,919,814.66 - Step 6: Final answer
x = 16,740,721.31
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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.