Finding the Fourth Proportional to 19,920,037.80, 29,880,056.70 and 19,920,037.80
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Solution
The fourth proportional to 19,920,037.80, 29,880,056.70 and 19,920,037.80 is: 29,880,056.70
Step by Step Solution
- Step 1: Write the proportion equation
19,920,037.80 : 29,880,056.70 = 19,920,037.80 : x - Step 2: Convert to fraction form
19,920,037.80/29,880,056.70 = 19,920,037.80/x - Step 3: Cross multiply
19,920,037.80x = 29,880,056.70 × 19,920,037.80 - Step 4: Simplify right side
19,920,037.80x = 595,211,858,930,143.25 - Step 5: Solve for x
x = 595,211,858,930,143.25/19,920,037.80 - Step 6: Final answer
x = 29,880,056.70
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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.