Finding the Fourth Proportional to 28,977,051.36, 39,986,397.12 and 15,924,029.40
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Solution
The fourth proportional to 28,977,051.36, 39,986,397.12 and 15,924,029.40 is: 21,974,097.90
Step by Step Solution
- Step 1: Write the proportion equation
28,977,051.36 : 39,986,397.12 = 15,924,029.40 : x - Step 2: Convert to fraction form
28,977,051.36/39,986,397.12 = 15,924,029.40/x - Step 3: Cross multiply
28,977,051.36x = 39,986,397.12 × 15,924,029.40 - Step 4: Simplify right side
28,977,051.36x = 636,744,563,338,955.25 - Step 5: Solve for x
x = 636,744,563,338,955.25/28,977,051.36 - Step 6: Final answer
x = 21,974,097.90
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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.