Finding the Fourth Proportional to 19,578,852.17, 29,224,562.14 and 18,135,989.86
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Solution
The fourth proportional to 19,578,852.17, 29,224,562.14 and 18,135,989.86 is: 27,070,859.82
Step by Step Solution
- Step 1: Write the proportion equation
19,578,852.17 : 29,224,562.14 = 18,135,989.86 : x - Step 2: Convert to fraction form
19,578,852.17/29,224,562.14 = 18,135,989.86/x - Step 3: Cross multiply
19,578,852.17x = 29,224,562.14 × 18,135,989.86 - Step 4: Simplify right side
19,578,852.17x = 530,016,362,587,386.12 - Step 5: Solve for x
x = 530,016,362,587,386.12/19,578,852.17 - Step 6: Final answer
x = 27,070,859.82
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.