Finding the Fourth Proportional to 13,708,318.70, 18,919,564.07 and 8,748,899.81
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Solution
The fourth proportional to 13,708,318.70, 18,919,564.07 and 8,748,899.81 is: 12,074,811.95
Step by Step Solution
- Step 1: Write the proportion equation
13,708,318.70 : 18,919,564.07 = 8,748,899.81 : x - Step 2: Convert to fraction form
13,708,318.70/18,919,564.07 = 8,748,899.81/x - Step 3: Cross multiply
13,708,318.70x = 18,919,564.07 × 8,748,899.81 - Step 4: Simplify right side
13,708,318.70x = 165,525,370,429,911.88 - Step 5: Solve for x
x = 165,525,370,429,911.88/13,708,318.70 - Step 6: Final answer
x = 12,074,811.95
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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.