Finding the Fourth Proportional to 19,953,721.80, 29,895,153.30 and 18,678,263.40
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Solution
The fourth proportional to 19,953,721.80, 29,895,153.30 and 18,678,263.40 is: 27,984,230.38
Step by Step Solution
- Step 1: Write the proportion equation
19,953,721.80 : 29,895,153.30 = 18,678,263.40 : x - Step 2: Convert to fraction form
19,953,721.80/29,895,153.30 = 18,678,263.40/x - Step 3: Cross multiply
19,953,721.80x = 29,895,153.30 × 18,678,263.40 - Step 4: Simplify right side
19,953,721.80x = 558,389,547,720,779.19 - Step 5: Solve for x
x = 558,389,547,720,779.19/19,953,721.80 - Step 6: Final answer
x = 27,984,230.38
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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.