Finding the Fourth Proportional to 28,033,458.75, 38,686,173.08 and 15,156,402.75
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Solution
The fourth proportional to 28,033,458.75, 38,686,173.08 and 15,156,402.75 is: 20,915,835.80
Step by Step Solution
- Step 1: Write the proportion equation
28,033,458.75 : 38,686,173.08 = 15,156,402.75 : x - Step 2: Convert to fraction form
28,033,458.75/38,686,173.08 = 15,156,402.75/x - Step 3: Cross multiply
28,033,458.75x = 38,686,173.08 × 15,156,402.75 - Step 4: Simplify right side
28,033,458.75x = 586,343,219,980,906 - Step 5: Solve for x
x = 586,343,219,980,906/28,033,458.75 - Step 6: Final answer
x = 20,915,835.80
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1.5x scale
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.