Finding the Fourth Proportional to 28,098,840.87, 38,777,252.31 and 15,709,456.31
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Solution
The fourth proportional to 28,098,840.87, 38,777,252.31 and 15,709,456.31 is: 21,679,525.99
Step by Step Solution
- Step 1: Write the proportion equation
28,098,840.87 : 38,777,252.31 = 15,709,456.31 : x - Step 2: Convert to fraction form
28,098,840.87/38,777,252.31 = 15,709,456.31/x - Step 3: Cross multiply
28,098,840.87x = 38,777,252.31 × 15,709,456.31 - Step 4: Simplify right side
28,098,840.87x = 609,169,550,791,905.38 - Step 5: Solve for x
x = 609,169,550,791,905.38/28,098,840.87 - Step 6: Final answer
x = 21,679,525.99
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1.5x scale
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.