Finding the Fourth Proportional to 19,899,152.80, 29,798,962.80 and 15,917,840.80
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Solution
The fourth proportional to 19,899,152.80, 29,798,962.80 and 15,917,840.80 is: 23,836,951.78
Step by Step Solution
- Step 1: Write the proportion equation
19,899,152.80 : 29,798,962.80 = 15,917,840.80 : x - Step 2: Convert to fraction form
19,899,152.80/29,798,962.80 = 15,917,840.80/x - Step 3: Cross multiply
19,899,152.80x = 29,798,962.80 × 15,917,840.80 - Step 4: Simplify right side
19,899,152.80x = 474,335,145,855,522.25 - Step 5: Solve for x
x = 474,335,145,855,522.25/19,899,152.80 - Step 6: Final answer
x = 23,836,951.78
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.