Finding the Fourth Proportional to 21,615,305.63, 32,422,918.95 and 7,042,207.91
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Solution
The fourth proportional to 21,615,305.63, 32,422,918.95 and 7,042,207.91 is: 10,563,298.99
Step by Step Solution
- Step 1: Write the proportion equation
21,615,305.63 : 32,422,918.95 = 7,042,207.91 : x - Step 2: Convert to fraction form
21,615,305.63/32,422,918.95 = 7,042,207.91/x - Step 3: Cross multiply
21,615,305.63x = 32,422,918.95 × 7,042,207.91 - Step 4: Simplify right side
21,615,305.63x = 228,328,936,132,864.31 - Step 5: Solve for x
x = 228,328,936,132,864.31/21,615,305.63 - Step 6: Final answer
x = 10,563,298.99
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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.