Finding the Fourth Proportional to 21,235,182.18, 31,697,748.50 and 18,221,911.86
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Solution
The fourth proportional to 21,235,182.18, 31,697,748.50 and 18,221,911.86 is: 27,199,841.02
Step by Step Solution
- Step 1: Write the proportion equation
21,235,182.18 : 31,697,748.50 = 18,221,911.86 : x - Step 2: Convert to fraction form
21,235,182.18/31,697,748.50 = 18,221,911.86/x - Step 3: Cross multiply
21,235,182.18x = 31,697,748.50 × 18,221,911.86 - Step 4: Simplify right side
21,235,182.18x = 577,593,579,236,337.62 - Step 5: Solve for x
x = 577,593,579,236,337.62/21,235,182.18 - Step 6: Final answer
x = 27,199,841.02
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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.