Finding the Fourth Proportional to 13,148,506.58, 18,144,590.69 and 7,347,335.99
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Solution
The fourth proportional to 13,148,506.58, 18,144,590.69 and 7,347,335.99 is: 10,139,128.99
Step by Step Solution
- Step 1: Write the proportion equation
13,148,506.58 : 18,144,590.69 = 7,347,335.99 : x - Step 2: Convert to fraction form
13,148,506.58/18,144,590.69 = 7,347,335.99/x - Step 3: Cross multiply
13,148,506.58x = 18,144,590.69 × 7,347,335.99 - Step 4: Simplify right side
13,148,506.58x = 133,314,404,128,101.31 - Step 5: Solve for x
x = 133,314,404,128,101.31/13,148,506.58 - Step 6: Final answer
x = 10,139,128.99
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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.