Finding the Fourth Proportional to 13,831,564.24, 19,086,782.20 and 7,720,386.40
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Solution
The fourth proportional to 13,831,564.24, 19,086,782.20 and 7,720,386.40 is: 10,653,699.84
Step by Step Solution
- Step 1: Write the proportion equation
13,831,564.24 : 19,086,782.20 = 7,720,386.40 : x - Step 2: Convert to fraction form
13,831,564.24/19,086,782.20 = 7,720,386.40/x - Step 3: Cross multiply
13,831,564.24x = 19,086,782.20 × 7,720,386.40 - Step 4: Simplify right side
13,831,564.24x = 147,357,333,716,642.09 - Step 5: Solve for x
x = 147,357,333,716,642.09/13,831,564.24 - Step 6: Final answer
x = 10,653,699.84
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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.