Finding the Fourth Proportional to 21,372,602.28, 29,497,980.78 and 16,207,258.20
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Solution
The fourth proportional to 21,372,602.28, 29,497,980.78 and 16,207,258.20 is: 22,368,890.07
Step by Step Solution
- Step 1: Write the proportion equation
21,372,602.28 : 29,497,980.78 = 16,207,258.20 : x - Step 2: Convert to fraction form
21,372,602.28/29,497,980.78 = 16,207,258.20/x - Step 3: Cross multiply
21,372,602.28x = 29,497,980.78 × 16,207,258.20 - Step 4: Simplify right side
21,372,602.28x = 478,081,390,880,097.38 - Step 5: Solve for x
x = 478,081,390,880,097.38/21,372,602.28 - Step 6: Final answer
x = 22,368,890.07
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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.