Finding the Fourth Proportional to 15,293,988.98, 21,106,153.34 and 8,325,121.07
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Solution
The fourth proportional to 15,293,988.98, 21,106,153.34 and 8,325,121.07 is: 11,488,911.25
Step by Step Solution
- Step 1: Write the proportion equation
15,293,988.98 : 21,106,153.34 = 8,325,121.07 : x - Step 2: Convert to fraction form
15,293,988.98/21,106,153.34 = 8,325,121.07/x - Step 3: Cross multiply
15,293,988.98x = 21,106,153.34 × 8,325,121.07 - Step 4: Simplify right side
15,293,988.98x = 175,711,281,966,672.66 - Step 5: Solve for x
x = 175,711,281,966,672.66/15,293,988.98 - Step 6: Final answer
x = 11,488,911.25
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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.