Finding the Fourth Proportional to 19,966,900.18, 29,953,661.76 and 7,009,688.20
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Solution
The fourth proportional to 19,966,900.18, 29,953,661.76 and 7,009,688.20 is: 10,515,694.85
Step by Step Solution
- Step 1: Write the proportion equation
19,966,900.18 : 29,953,661.76 = 7,009,688.20 : x - Step 2: Convert to fraction form
19,966,900.18/29,953,661.76 = 7,009,688.20/x - Step 3: Cross multiply
19,966,900.18x = 29,953,661.76 × 7,009,688.20 - Step 4: Simplify right side
19,966,900.18x = 209,965,829,385,863.25 - Step 5: Solve for x
x = 209,965,829,385,863.25/19,966,900.18 - Step 6: Final answer
x = 10,515,694.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.