Finding the Fourth Proportional to 21,520,723.24, 29,698,356.50 and 11,730,953.08
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Solution
The fourth proportional to 21,520,723.24, 29,698,356.50 and 11,730,953.08 is: 16,188,583.57
Step by Step Solution
- Step 1: Write the proportion equation
21,520,723.24 : 29,698,356.50 = 11,730,953.08 : x - Step 2: Convert to fraction form
21,520,723.24/29,698,356.50 = 11,730,953.08/x - Step 3: Cross multiply
21,520,723.24x = 29,698,356.50 × 11,730,953.08 - Step 4: Simplify right side
21,520,723.24x = 348,390,026,654,613 - Step 5: Solve for x
x = 348,390,026,654,613/21,520,723.24 - Step 6: Final answer
x = 16,188,583.57
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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.