Finding the Fourth Proportional to 10,376,918.40, 15,523,387.20 and 9,117,206.40
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Solution
The fourth proportional to 10,376,918.40, 15,523,387.20 and 9,117,206.40 is: 13,638,916.65
Step by Step Solution
- Step 1: Write the proportion equation
10,376,918.40 : 15,523,387.20 = 9,117,206.40 : x - Step 2: Convert to fraction form
10,376,918.40/15,523,387.20 = 9,117,206.40/x - Step 3: Cross multiply
10,376,918.40x = 15,523,387.20 × 9,117,206.40 - Step 4: Simplify right side
10,376,918.40x = 141,529,925,129,518.09 - Step 5: Solve for x
x = 141,529,925,129,518.09/10,376,918.40 - Step 6: Final answer
x = 13,638,916.65
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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.