Finding the Fourth Proportional to 15,465,371.49, 21,339,840.18 and 8,937,740.42
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Solution
The fourth proportional to 15,465,371.49, 21,339,840.18 and 8,937,740.42 is: 12,332,710.68
Step by Step Solution
- Step 1: Write the proportion equation
15,465,371.49 : 21,339,840.18 = 8,937,740.42 : x - Step 2: Convert to fraction form
15,465,371.49/21,339,840.18 = 8,937,740.42/x - Step 3: Cross multiply
15,465,371.49x = 21,339,840.18 × 8,937,740.42 - Step 4: Simplify right side
15,465,371.49x = 190,729,952,133,126.06 - Step 5: Solve for x
x = 190,729,952,133,126.06/15,465,371.49 - Step 6: Final answer
x = 12,332,710.68
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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.