Finding the Fourth Proportional to 28,918,937.36, 39,908,540.74 and 15,865,959.08
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Solution
The fourth proportional to 28,918,937.36, 39,908,540.74 and 15,865,959.08 is: 21,895,246.93
Step by Step Solution
- Step 1: Write the proportion equation
28,918,937.36 : 39,908,540.74 = 15,865,959.08 : x - Step 2: Convert to fraction form
28,918,937.36/39,908,540.74 = 15,865,959.08/x - Step 3: Cross multiply
28,918,937.36x = 39,908,540.74 × 15,865,959.08 - Step 4: Simplify right side
28,918,937.36x = 633,187,274,323,353 - Step 5: Solve for x
x = 633,187,274,323,353/28,918,937.36 - Step 6: Final answer
x = 21,895,246.93
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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.