Finding the Fourth Proportional to 13,130,376.99, 18,122,943.60 and 7,699,618.59
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Solution
The fourth proportional to 13,130,376.99, 18,122,943.60 and 7,699,618.59 is: 10,627,246.54
Step by Step Solution
- Step 1: Write the proportion equation
13,130,376.99 : 18,122,943.60 = 7,699,618.59 : x - Step 2: Convert to fraction form
13,130,376.99/18,122,943.60 = 7,699,618.59/x - Step 3: Cross multiply
13,130,376.99x = 18,122,943.60 × 7,699,618.59 - Step 4: Simplify right side
13,130,376.99x = 139,539,753,448,081.53 - Step 5: Solve for x
x = 139,539,753,448,081.53/13,130,376.99 - Step 6: Final answer
x = 10,627,246.54
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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.