Finding the Fourth Proportional to 13,209,007.80, 19,813,511.70 and 12,092,981.70
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Solution
The fourth proportional to 13,209,007.80, 19,813,511.70 and 12,092,981.70 is: 18,139,472.55
Step by Step Solution
- Step 1: Write the proportion equation
13,209,007.80 : 19,813,511.70 = 12,092,981.70 : x - Step 2: Convert to fraction form
13,209,007.80/19,813,511.70 = 12,092,981.70/x - Step 3: Cross multiply
13,209,007.80x = 19,813,511.70 × 12,092,981.70 - Step 4: Simplify right side
13,209,007.80x = 239,604,434,400,835.88 - Step 5: Solve for x
x = 239,604,434,400,835.88/13,209,007.80 - Step 6: Final answer
x = 18,139,472.55
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1.5x scale
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.