Finding the Fourth Proportional to 28,028,585.74, 38,679,451.95 and 15,805,445.98
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Solution
The fourth proportional to 28,028,585.74, 38,679,451.95 and 15,805,445.98 is: 21,811,517.50
Step by Step Solution
- Step 1: Write the proportion equation
28,028,585.74 : 38,679,451.95 = 15,805,445.98 : x - Step 2: Convert to fraction form
28,028,585.74/38,679,451.95 = 15,805,445.98/x - Step 3: Cross multiply
28,028,585.74x = 38,679,451.95 × 15,805,445.98 - Step 4: Simplify right side
28,028,585.74x = 611,345,988,331,730.75 - Step 5: Solve for x
x = 611,345,988,331,730.75/28,028,585.74 - Step 6: Final answer
x = 21,811,517.50
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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.