Finding the Fourth Proportional to 12,636,795.74, 17,438,669.35 and 7,130,211.62
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Solution
The fourth proportional to 12,636,795.74, 17,438,669.35 and 7,130,211.62 is: 9,839,630.66
Step by Step Solution
- Step 1: Write the proportion equation
12,636,795.74 : 17,438,669.35 = 7,130,211.62 : x - Step 2: Convert to fraction form
12,636,795.74/17,438,669.35 = 7,130,211.62/x - Step 3: Cross multiply
12,636,795.74x = 17,438,669.35 × 7,130,211.62 - Step 4: Simplify right side
12,636,795.74x = 124,341,402,731,688.97 - Step 5: Solve for x
x = 124,341,402,731,688.97/12,636,795.74 - Step 6: Final answer
x = 9,839,630.66
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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.