Finding the Fourth Proportional to 28,924,655.29, 39,915,914.80 and 15,872,132.63
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Solution
The fourth proportional to 28,924,655.29, 39,915,914.80 and 15,872,132.63 is: 21,903,482.94
Step by Step Solution
- Step 1: Write the proportion equation
28,924,655.29 : 39,915,914.80 = 15,872,132.63 : x - Step 2: Convert to fraction form
28,924,655.29/39,915,914.80 = 15,872,132.63/x - Step 3: Cross multiply
28,924,655.29x = 39,915,914.80 × 15,872,132.63 - Step 4: Simplify right side
28,924,655.29x = 633,550,693,753,379.88 - Step 5: Solve for x
x = 633,550,693,753,379.88/28,924,655.29 - Step 6: Final answer
x = 21,903,482.94
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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.