Finding the Fourth Proportional to 18,378,332.18, 25,355,276.26 and 18,349,988.66
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Solution
The fourth proportional to 18,378,332.18, 25,355,276.26 and 18,349,988.66 is: 25,316,172.72
Step by Step Solution
- Step 1: Write the proportion equation
18,378,332.18 : 25,355,276.26 = 18,349,988.66 : x - Step 2: Convert to fraction form
18,378,332.18/25,355,276.26 = 18,349,988.66/x - Step 3: Cross multiply
18,378,332.18x = 25,355,276.26 × 18,349,988.66 - Step 4: Simplify right side
18,378,332.18x = 465,269,031,669,515.88 - Step 5: Solve for x
x = 465,269,031,669,515.88/18,378,332.18 - Step 6: Final answer
x = 25,316,172.72
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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.