Finding the Fourth Proportional to 13,165,871.70, 19,748,807.55 and 6,788,579.70
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Solution
The fourth proportional to 13,165,871.70, 19,748,807.55 and 6,788,579.70 is: 10,182,869.55
Step by Step Solution
- Step 1: Write the proportion equation
13,165,871.70 : 19,748,807.55 = 6,788,579.70 : x - Step 2: Convert to fraction form
13,165,871.70/19,748,807.55 = 6,788,579.70/x - Step 3: Cross multiply
13,165,871.70x = 19,748,807.55 × 6,788,579.70 - Step 4: Simplify right side
13,165,871.70x = 134,066,354,033,136.75 - Step 5: Solve for x
x = 134,066,354,033,136.75/13,165,871.70 - Step 6: Final answer
x = 10,182,869.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.