Finding the Fourth Proportional to 20,577,933.60, 28,395,502.32 and 11,878,908.74
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Solution
The fourth proportional to 20,577,933.60, 28,395,502.32 and 11,878,908.74 is: 16,391,712.95
Step by Step Solution
- Step 1: Write the proportion equation
20,577,933.60 : 28,395,502.32 = 11,878,908.74 : x - Step 2: Convert to fraction form
20,577,933.60/28,395,502.32 = 11,878,908.74/x - Step 3: Cross multiply
20,577,933.60x = 28,395,502.32 × 11,878,908.74 - Step 4: Simplify right side
20,577,933.60x = 337,307,580,685,738.31 - Step 5: Solve for x
x = 337,307,580,685,738.31/20,577,933.60 - Step 6: Final answer
x = 16,391,712.95
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1.5x scale
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.