Finding the Fourth Proportional to 28,382,101.76, 39,167,288.16 and 15,329,355.68
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Solution
The fourth proportional to 28,382,101.76, 39,167,288.16 and 15,329,355.68 is: 21,154,504.21
Step by Step Solution
- Step 1: Write the proportion equation
28,382,101.76 : 39,167,288.16 = 15,329,355.68 : x - Step 2: Convert to fraction form
28,382,101.76/39,167,288.16 = 15,329,355.68/x - Step 3: Cross multiply
28,382,101.76x = 39,167,288.16 × 15,329,355.68 - Step 4: Simplify right side
28,382,101.76x = 600,409,291,225,692.62 - Step 5: Solve for x
x = 600,409,291,225,692.62/28,382,101.76 - Step 6: Final answer
x = 21,154,504.21
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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.