Finding the Fourth Proportional to 13,692,428.62, 18,896,819.08 and 7,580,857.12
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Solution
The fourth proportional to 13,692,428.62, 18,896,819.08 and 7,580,857.12 is: 10,462,284.63
Step by Step Solution
- Step 1: Write the proportion equation
13,692,428.62 : 18,896,819.08 = 7,580,857.12 : x - Step 2: Convert to fraction form
13,692,428.62/18,896,819.08 = 7,580,857.12/x - Step 3: Cross multiply
13,692,428.62x = 18,896,819.08 × 7,580,857.12 - Step 4: Simplify right side
13,692,428.62x = 143,254,085,467,969.84 - Step 5: Solve for x
x = 143,254,085,467,969.84/13,692,428.62 - Step 6: Final answer
x = 10,462,284.63
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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.