Finding the Fourth Proportional to 13,748,029.68, 18,972,881.46 and 7,636,458.18
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Solution
The fourth proportional to 13,748,029.68, 18,972,881.46 and 7,636,458.18 is: 10,538,645.84
Step by Step Solution
- Step 1: Write the proportion equation
13,748,029.68 : 18,972,881.46 = 7,636,458.18 : x - Step 2: Convert to fraction form
13,748,029.68/18,972,881.46 = 7,636,458.18/x - Step 3: Cross multiply
13,748,029.68x = 18,972,881.46 × 7,636,458.18 - Step 4: Simplify right side
13,748,029.68x = 144,885,615,823,387.34 - Step 5: Solve for x
x = 144,885,615,823,387.34/13,748,029.68 - Step 6: Final answer
x = 10,538,645.84
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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.