Finding the Fourth Proportional to 19,386,655.51, 26,754,636.71 and 11,126,651.75
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Solution
The fourth proportional to 19,386,655.51, 26,754,636.71 and 11,126,651.75 is: 15,355,383.26
Step by Step Solution
- Step 1: Write the proportion equation
19,386,655.51 : 26,754,636.71 = 11,126,651.75 : x - Step 2: Convert to fraction form
19,386,655.51/26,754,636.71 = 11,126,651.75/x - Step 3: Cross multiply
19,386,655.51x = 26,754,636.71 × 11,126,651.75 - Step 4: Simplify right side
19,386,655.51x = 297,689,525,381,189.06 - Step 5: Solve for x
x = 297,689,525,381,189.06/19,386,655.51 - Step 6: Final answer
x = 15,355,383.26
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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.