Finding the Fourth Proportional to 13,492,420.18, 18,619,542.76 and 7,613,302.17
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Solution
The fourth proportional to 13,492,420.18, 18,619,542.76 and 7,613,302.17 is: 10,506,358.64
Step by Step Solution
- Step 1: Write the proportion equation
13,492,420.18 : 18,619,542.76 = 7,613,302.17 : x - Step 2: Convert to fraction form
13,492,420.18/18,619,542.76 = 7,613,302.17/x - Step 3: Cross multiply
13,492,420.18x = 18,619,542.76 × 7,613,302.17 - Step 4: Simplify right side
13,492,420.18x = 141,756,205,299,115.81 - Step 5: Solve for x
x = 141,756,205,299,115.81/13,492,420.18 - Step 6: Final answer
x = 10,506,358.64
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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.