Finding the Fourth Proportional to 19,478,547.80, 29,217,821.70 and 18,980,883.80
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Solution
The fourth proportional to 19,478,547.80, 29,217,821.70 and 18,980,883.80 is: 28,471,325.70
Step by Step Solution
- Step 1: Write the proportion equation
19,478,547.80 : 29,217,821.70 = 18,980,883.80 : x - Step 2: Convert to fraction form
19,478,547.80/29,217,821.70 = 18,980,883.80/x - Step 3: Cross multiply
19,478,547.80x = 29,217,821.70 × 18,980,883.80 - Step 4: Simplify right side
19,478,547.80x = 554,580,078,576,818.44 - Step 5: Solve for x
x = 554,580,078,576,818.44/19,478,547.80 - Step 6: Final answer
x = 28,471,325.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.