Finding the Fourth Proportional to 13,869,690.90, 20,804,536.35 and 8,494,919.70
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Solution
The fourth proportional to 13,869,690.90, 20,804,536.35 and 8,494,919.70 is: 12,742,379.55
Step by Step Solution
- Step 1: Write the proportion equation
13,869,690.90 : 20,804,536.35 = 8,494,919.70 : x - Step 2: Convert to fraction form
13,869,690.90/20,804,536.35 = 8,494,919.70/x - Step 3: Cross multiply
13,869,690.90x = 20,804,536.35 × 8,494,919.70 - Step 4: Simplify right side
13,869,690.90x = 176,732,865,688,981.09 - Step 5: Solve for x
x = 176,732,865,688,981.09/13,869,690.90 - Step 6: Final answer
x = 12,742,379.55
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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.