Finding the Fourth Proportional to 11,368.78, 15,688.68 and 6,332.99
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Solution
The fourth proportional to 11,368.78, 15,688.68 and 6,332.99 is: 8,739.39
Step by Step Solution
- Step 1: Write the proportion equation
11,368.78 : 15,688.68 = 6,332.99 : x - Step 2: Convert to fraction form
11,368.78/15,688.68 = 6,332.99/x - Step 3: Cross multiply
11,368.78x = 15,688.68 × 6,332.99 - Step 4: Simplify right side
11,368.78x = 99,356,253.55 - Step 5: Solve for x
x = 99,356,253.55/11,368.78 - Step 6: Final answer
x = 8,739.39
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1.5x scale
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.