Finding the Fourth Proportional to 13,065,835.14, 18,031,315.41 and 7,185,924.09
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Solution
The fourth proportional to 13,065,835.14, 18,031,315.41 and 7,185,924.09 is: 9,916,829.84
Step by Step Solution
- Step 1: Write the proportion equation
13,065,835.14 : 18,031,315.41 = 7,185,924.09 : x - Step 2: Convert to fraction form
13,065,835.14/18,031,315.41 = 7,185,924.09/x - Step 3: Cross multiply
13,065,835.14x = 18,031,315.41 × 7,185,924.09 - Step 4: Simplify right side
13,065,835.14x = 129,571,663,779,107.22 - Step 5: Solve for x
x = 129,571,663,779,107.22/13,065,835.14 - Step 6: Final answer
x = 9,916,829.84
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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.