Finding the Fourth Proportional to 21,235,176.18, 31,697,739.56 and 18,221,905.86
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Solution
The fourth proportional to 21,235,176.18, 31,697,739.56 and 18,221,905.86 is: 27,199,832.07
Step by Step Solution
- Step 1: Write the proportion equation
21,235,176.18 : 31,697,739.56 = 18,221,905.86 : x - Step 2: Convert to fraction form
21,235,176.18/31,697,739.56 = 18,221,905.86/x - Step 3: Cross multiply
21,235,176.18x = 31,697,739.56 × 18,221,905.86 - Step 4: Simplify right side
21,235,176.18x = 577,593,226,146,008.25 - Step 5: Solve for x
x = 577,593,226,146,008.25/21,235,176.18 - Step 6: Final answer
x = 27,199,832.07
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.