Finding the Fourth Proportional to 13,288,161.84, 18,340,041.35 and 7,781,215.20
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Solution
The fourth proportional to 13,288,161.84, 18,340,041.35 and 7,781,215.20 is: 10,739,469.48
Step by Step Solution
- Step 1: Write the proportion equation
13,288,161.84 : 18,340,041.35 = 7,781,215.20 : x - Step 2: Convert to fraction form
13,288,161.84/18,340,041.35 = 7,781,215.20/x - Step 3: Cross multiply
13,288,161.84x = 18,340,041.35 × 7,781,215.20 - Step 4: Simplify right side
13,288,161.84x = 142,707,808,521,248.53 - Step 5: Solve for x
x = 142,707,808,521,248.53/13,288,161.84 - Step 6: Final answer
x = 10,739,469.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.