Finding the Fourth Proportional to 13,125,830.40, 18,331,372.80 and 13,125,830.40
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Solution
The fourth proportional to 13,125,830.40, 18,331,372.80 and 13,125,830.40 is: 18,331,372.80
Step by Step Solution
- Step 1: Write the proportion equation
13,125,830.40 : 18,331,372.80 = 13,125,830.40 : x - Step 2: Convert to fraction form
13,125,830.40/18,331,372.80 = 13,125,830.40/x - Step 3: Cross multiply
13,125,830.40x = 18,331,372.80 × 13,125,830.40 - Step 4: Simplify right side
13,125,830.40x = 240,614,490,371,973.12 - Step 5: Solve for x
x = 240,614,490,371,973.12/13,125,830.40 - Step 6: Final answer
x = 18,331,372.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.