Finding the Fourth Proportional to 15,316,311.95, 21,136,513.85 and 8,346,991.15
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Solution
The fourth proportional to 15,316,311.95, 21,136,513.85 and 8,346,991.15 is: 11,518,849.62
Step by Step Solution
- Step 1: Write the proportion equation
15,316,311.95 : 21,136,513.85 = 8,346,991.15 : x - Step 2: Convert to fraction form
15,316,311.95/21,136,513.85 = 8,346,991.15/x - Step 3: Cross multiply
15,316,311.95x = 21,136,513.85 × 8,346,991.15 - Step 4: Simplify right side
15,316,311.95x = 176,426,294,063,789.31 - Step 5: Solve for x
x = 176,426,294,063,789.31/15,316,311.95 - Step 6: Final answer
x = 11,518,849.62
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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.