Finding the Fourth Proportional to 13,165,215.32, 18,163,596.99 and 7,657,421.00
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Solution
The fourth proportional to 13,165,215.32, 18,163,596.99 and 7,657,421.00 is: 10,564,681.68
Step by Step Solution
- Step 1: Write the proportion equation
13,165,215.32 : 18,163,596.99 = 7,657,421.00 : x - Step 2: Convert to fraction form
13,165,215.32/18,163,596.99 = 7,657,421.00/x - Step 3: Cross multiply
13,165,215.32x = 18,163,596.99 × 7,657,421.00 - Step 4: Simplify right side
13,165,215.32x = 139,086,309,072,171.78 - Step 5: Solve for x
x = 139,086,309,072,171.78/13,165,215.32 - Step 6: Final answer
x = 10,564,681.68
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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.