Finding the Fourth Proportional to 13,130,723.84, 18,123,421.44 and 7,699,965.44
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Solution
The fourth proportional to 13,130,723.84, 18,123,421.44 and 7,699,965.44 is: 10,627,724.75
Step by Step Solution
- Step 1: Write the proportion equation
13,130,723.84 : 18,123,421.44 = 7,699,965.44 : x - Step 2: Convert to fraction form
13,130,723.84/18,123,421.44 = 7,699,965.44/x - Step 3: Cross multiply
13,130,723.84x = 18,123,421.44 × 7,699,965.44 - Step 4: Simplify right side
13,130,723.84x = 139,549,718,742,555.05 - Step 5: Solve for x
x = 139,549,718,742,555.05/13,130,723.84 - Step 6: Final answer
x = 10,627,724.75
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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.