Finding the Fourth Proportional to 19,423,842.40, 29,135,763.60 and 18,677,346.40
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Solution
The fourth proportional to 19,423,842.40, 29,135,763.60 and 18,677,346.40 is: 28,016,019.60
Step by Step Solution
- Step 1: Write the proportion equation
19,423,842.40 : 29,135,763.60 = 18,677,346.40 : x - Step 2: Convert to fraction form
19,423,842.40/29,135,763.60 = 18,677,346.40/x - Step 3: Cross multiply
19,423,842.40x = 29,135,763.60 × 18,677,346.40 - Step 4: Simplify right side
19,423,842.40x = 544,178,749,385,711 - Step 5: Solve for x
x = 544,178,749,385,711/19,423,842.40 - Step 6: Final answer
x = 28,016,019.60
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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.