Finding the Fourth Proportional to 28,441,646.28, 39,249,192 and 15,388,618.68
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Solution
The fourth proportional to 28,441,646.28, 39,249,192 and 15,388,618.68 is: 21,236,142.35
Step by Step Solution
- Step 1: Write the proportion equation
28,441,646.28 : 39,249,192 = 15,388,618.68 : x - Step 2: Convert to fraction form
28,441,646.28/39,249,192 = 15,388,618.68/x - Step 3: Cross multiply
28,441,646.28x = 39,249,192 × 15,388,618.68 - Step 4: Simplify right side
28,441,646.28x = 603,990,849,186,106.50 - Step 5: Solve for x
x = 603,990,849,186,106.50/28,441,646.28 - Step 6: Final answer
x = 21,236,142.35
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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.