Finding the Fourth Proportional to 28,011,134.84, 38,655,289.62 and 15,621,241.68
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Solution
The fourth proportional to 28,011,134.84, 38,655,289.62 and 15,621,241.68 is: 21,557,270.88
Step by Step Solution
- Step 1: Write the proportion equation
28,011,134.84 : 38,655,289.62 = 15,621,241.68 : x - Step 2: Convert to fraction form
28,011,134.84/38,655,289.62 = 15,621,241.68/x - Step 3: Cross multiply
28,011,134.84x = 38,655,289.62 × 15,621,241.68 - Step 4: Simplify right side
28,011,134.84x = 603,843,621,364,415.25 - Step 5: Solve for x
x = 603,843,621,364,415.25/28,011,134.84 - Step 6: Final answer
x = 21,557,270.88
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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.