Finding the Fourth Proportional to 28,926,199.15, 39,918,756.68 and 15,872,695.99
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Solution
The fourth proportional to 28,926,199.15, 39,918,756.68 and 15,872,695.99 is: 21,904,650.72
Step by Step Solution
- Step 1: Write the proportion equation
28,926,199.15 : 39,918,756.68 = 15,872,695.99 : x - Step 2: Convert to fraction form
28,926,199.15/39,918,756.68 = 15,872,695.99/x - Step 3: Cross multiply
28,926,199.15x = 39,918,756.68 × 15,872,695.99 - Step 4: Simplify right side
28,926,199.15x = 633,618,289,080,421.75 - Step 5: Solve for x
x = 633,618,289,080,421.75/28,926,199.15 - Step 6: Final answer
x = 21,904,650.72
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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.