Finding the Fourth Proportional to 13,130,402.24, 18,122,978.40 and 7,699,643.84
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Solution
The fourth proportional to 13,130,402.24, 18,122,978.40 and 7,699,643.84 is: 10,627,281.36
Step by Step Solution
- Step 1: Write the proportion equation
13,130,402.24 : 18,122,978.40 = 7,699,643.84 : x - Step 2: Convert to fraction form
13,130,402.24/18,122,978.40 = 7,699,643.84/x - Step 3: Cross multiply
13,130,402.24x = 18,122,978.40 × 7,699,643.84 - Step 4: Simplify right side
13,130,402.24x = 139,540,479,000,013.05 - Step 5: Solve for x
x = 139,540,479,000,013.05/13,130,402.24 - Step 6: Final answer
x = 10,627,281.36
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.