Finding the Fourth Proportional to 20,563,312.17, 28,376,887.91 and 11,395,758.09
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Solution
The fourth proportional to 20,563,312.17, 28,376,887.91 and 11,395,758.09 is: 15,725,878.56
Step by Step Solution
- Step 1: Write the proportion equation
20,563,312.17 : 28,376,887.91 = 11,395,758.09 : x - Step 2: Convert to fraction form
20,563,312.17/28,376,887.91 = 11,395,758.09/x - Step 3: Cross multiply
20,563,312.17x = 28,376,887.91 × 11,395,758.09 - Step 4: Simplify right side
20,563,312.17x = 323,376,149,912,426.94 - Step 5: Solve for x
x = 323,376,149,912,426.94/20,563,312.17 - Step 6: Final answer
x = 15,725,878.56
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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.