Finding the Fourth Proportional to 15,395,645.64, 21,246,657.84 and 8,520,129.93
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Solution
The fourth proportional to 15,395,645.64, 21,246,657.84 and 8,520,129.93 is: 11,758,148.35
Step by Step Solution
- Step 1: Write the proportion equation
15,395,645.64 : 21,246,657.84 = 8,520,129.93 : x - Step 2: Convert to fraction form
15,395,645.64/21,246,657.84 = 8,520,129.93/x - Step 3: Cross multiply
15,395,645.64x = 21,246,657.84 × 8,520,129.93 - Step 4: Simplify right side
15,395,645.64x = 181,024,285,375,053.16 - Step 5: Solve for x
x = 181,024,285,375,053.16/15,395,645.64 - Step 6: Final answer
x = 11,758,148.35
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.