Finding the Fourth Proportional to 28,153,402.14, 38,850,618.87 and 15,762,336.42
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Solution
The fourth proportional to 28,153,402.14, 38,850,618.87 and 15,762,336.42 is: 21,751,421.79
Step by Step Solution
- Step 1: Write the proportion equation
28,153,402.14 : 38,850,618.87 = 15,762,336.42 : x - Step 2: Convert to fraction form
28,153,402.14/38,850,618.87 = 15,762,336.42/x - Step 3: Cross multiply
28,153,402.14x = 38,850,618.87 × 15,762,336.42 - Step 4: Simplify right side
28,153,402.14x = 612,376,524,754,140.25 - Step 5: Solve for x
x = 612,376,524,754,140.25/28,153,402.14 - Step 6: Final answer
x = 21,751,421.79
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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.