Finding the Fourth Proportional to 19,786,986.16, 29,637,820.68 and 13,361,907.76
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Solution
The fourth proportional to 19,786,986.16, 29,637,820.68 and 13,361,907.76 is: 20,014,054.84
Step by Step Solution
- Step 1: Write the proportion equation
19,786,986.16 : 29,637,820.68 = 13,361,907.76 : x - Step 2: Convert to fraction form
19,786,986.16/29,637,820.68 = 13,361,907.76/x - Step 3: Cross multiply
19,786,986.16x = 29,637,820.68 × 13,361,907.76 - Step 4: Simplify right side
19,786,986.16x = 396,017,826,133,580.44 - Step 5: Solve for x
x = 396,017,826,133,580.44/19,786,986.16 - Step 6: Final answer
x = 20,014,054.84
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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.