Finding the Fourth Proportional to 21,520,718.24, 29,698,349.60 and 11,730,948.08
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Solution
The fourth proportional to 21,520,718.24, 29,698,349.60 and 11,730,948.08 is: 16,188,576.67
Step by Step Solution
- Step 1: Write the proportion equation
21,520,718.24 : 29,698,349.60 = 11,730,948.08 : x - Step 2: Convert to fraction form
21,520,718.24/29,698,349.60 = 11,730,948.08/x - Step 3: Cross multiply
21,520,718.24x = 29,698,349.60 × 11,730,948.08 - Step 4: Simplify right side
21,520,718.24x = 348,389,797,219,288.81 - Step 5: Solve for x
x = 348,389,797,219,288.81/21,520,718.24 - Step 6: Final answer
x = 16,188,576.67
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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.