Finding the Fourth Proportional to 19,929,143.70, 29,893,715.55 and 5,554,430.10
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Solution
The fourth proportional to 19,929,143.70, 29,893,715.55 and 5,554,430.10 is: 8,331,645.15
Step by Step Solution
- Step 1: Write the proportion equation
19,929,143.70 : 29,893,715.55 = 5,554,430.10 : x - Step 2: Convert to fraction form
19,929,143.70/29,893,715.55 = 5,554,430.10/x - Step 3: Cross multiply
19,929,143.70x = 29,893,715.55 × 5,554,430.10 - Step 4: Simplify right side
19,929,143.70x = 166,042,553,451,758.06 - Step 5: Solve for x
x = 166,042,553,451,758.06/19,929,143.70 - Step 6: Final answer
x = 8,331,645.15
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1.5x scale
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.