Finding the Fourth Proportional to 28,268,852.20, 42,403,278.30 and 15,528,653.80
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Solution
The fourth proportional to 28,268,852.20, 42,403,278.30 and 15,528,653.80 is: 23,292,980.70
Step by Step Solution
- Step 1: Write the proportion equation
28,268,852.20 : 42,403,278.30 = 15,528,653.80 : x - Step 2: Convert to fraction form
28,268,852.20/42,403,278.30 = 15,528,653.80/x - Step 3: Cross multiply
28,268,852.20x = 42,403,278.30 × 15,528,653.80 - Step 4: Simplify right side
28,268,852.20x = 658,465,828,705,752.50 - Step 5: Solve for x
x = 658,465,828,705,752.50/28,268,852.20 - Step 6: Final answer
x = 23,292,980.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.