Finding the Fourth Proportional to 15,714,373.68, 21,685,678.56 and 8,744,931.99
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Solution
The fourth proportional to 15,714,373.68, 21,685,678.56 and 8,744,931.99 is: 12,067,918.71
Step by Step Solution
- Step 1: Write the proportion equation
15,714,373.68 : 21,685,678.56 = 8,744,931.99 : x - Step 2: Convert to fraction form
15,714,373.68/21,685,678.56 = 8,744,931.99/x - Step 3: Cross multiply
15,714,373.68x = 21,685,678.56 × 8,744,931.99 - Step 4: Simplify right side
15,714,373.68x = 189,639,784,164,201.12 - Step 5: Solve for x
x = 189,639,784,164,201.12/15,714,373.68 - Step 6: Final answer
x = 12,067,918.71
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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.