Finding the Fourth Proportional to 15,191,731.04, 20,964,587.28 and 8,316,217.76
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Solution
The fourth proportional to 15,191,731.04, 20,964,587.28 and 8,316,217.76 is: 11,476,379.66
Step by Step Solution
- Step 1: Write the proportion equation
15,191,731.04 : 20,964,587.28 = 8,316,217.76 : x - Step 2: Convert to fraction form
15,191,731.04/20,964,587.28 = 8,316,217.76/x - Step 3: Cross multiply
15,191,731.04x = 20,964,587.28 × 8,316,217.76 - Step 4: Simplify right side
15,191,731.04x = 174,346,073,069,006.09 - Step 5: Solve for x
x = 174,346,073,069,006.09/15,191,731.04 - Step 6: Final answer
x = 11,476,379.66
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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.