Finding the Fourth Proportional to 21,652,903.21, 29,877,208.68 and 12,356,228.65
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Solution
The fourth proportional to 21,652,903.21, 29,877,208.68 and 12,356,228.65 is: 17,049,428.35
Step by Step Solution
- Step 1: Write the proportion equation
21,652,903.21 : 29,877,208.68 = 12,356,228.65 : x - Step 2: Convert to fraction form
21,652,903.21/29,877,208.68 = 12,356,228.65/x - Step 3: Cross multiply
21,652,903.21x = 29,877,208.68 × 12,356,228.65 - Step 4: Simplify right side
21,652,903.21x = 369,169,621,873,844.69 - Step 5: Solve for x
x = 369,169,621,873,844.69/21,652,903.21 - Step 6: Final answer
x = 17,049,428.35
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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.