Finding the Fourth Proportional to 21,716,437.23, 29,971,342.17 and 12,549,079.98
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Solution
The fourth proportional to 21,716,437.23, 29,971,342.17 and 12,549,079.98 is: 17,319,266.78
Step by Step Solution
- Step 1: Write the proportion equation
21,716,437.23 : 29,971,342.17 = 12,549,079.98 : x - Step 2: Convert to fraction form
21,716,437.23/29,971,342.17 = 12,549,079.98/x - Step 3: Cross multiply
21,716,437.23x = 29,971,342.17 × 12,549,079.98 - Step 4: Simplify right side
21,716,437.23x = 376,112,769,999,276.81 - Step 5: Solve for x
x = 376,112,769,999,276.81/21,716,437.23 - Step 6: Final answer
x = 17,319,266.78
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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.