Finding the Fourth Proportional to 12,781,893.62, 17,639,448.47 and 7,559,378.63
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Solution
The fourth proportional to 12,781,893.62, 17,639,448.47 and 7,559,378.63 is: 10,432,199.93
Step by Step Solution
- Step 1: Write the proportion equation
12,781,893.62 : 17,639,448.47 = 7,559,378.63 : x - Step 2: Convert to fraction form
12,781,893.62/17,639,448.47 = 7,559,378.63/x - Step 3: Cross multiply
12,781,893.62x = 17,639,448.47 × 7,559,378.63 - Step 4: Simplify right side
12,781,893.62x = 133,343,269,683,110.06 - Step 5: Solve for x
x = 133,343,269,683,110.06/12,781,893.62 - Step 6: Final answer
x = 10,432,199.93
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1.5x scale
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.