Finding the Fourth Proportional to 12,587,979.30, 18,881,968.95 and 4,074,425.70
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Solution
The fourth proportional to 12,587,979.30, 18,881,968.95 and 4,074,425.70 is: 6,111,638.55
Step by Step Solution
- Step 1: Write the proportion equation
12,587,979.30 : 18,881,968.95 = 4,074,425.70 : x - Step 2: Convert to fraction form
12,587,979.30/18,881,968.95 = 4,074,425.70/x - Step 3: Cross multiply
12,587,979.30x = 18,881,968.95 × 4,074,425.70 - Step 4: Simplify right side
12,587,979.30x = 76,933,179,556,482.02 - Step 5: Solve for x
x = 76,933,179,556,482.02/12,587,979.30 - Step 6: Final answer
x = 6,111,638.55
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1.5x scale
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.