Finding the Fourth Proportional to 13,143,773.98, 18,139,104.48 and 7,918,427.06
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Solution
The fourth proportional to 13,143,773.98, 18,139,104.48 and 7,918,427.06 is: 10,927,848.88
Step by Step Solution
- Step 1: Write the proportion equation
13,143,773.98 : 18,139,104.48 = 7,918,427.06 : x - Step 2: Convert to fraction form
13,143,773.98/18,139,104.48 = 7,918,427.06/x - Step 3: Cross multiply
13,143,773.98x = 18,139,104.48 × 7,918,427.06 - Step 4: Simplify right side
13,143,773.98x = 143,633,175,758,599.22 - Step 5: Solve for x
x = 143,633,175,758,599.22/13,143,773.98 - Step 6: Final answer
x = 10,927,848.88
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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.