Finding the Fourth Proportional to 19,966,896.18, 29,953,655.76 and 7,009,684.20
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Solution
The fourth proportional to 19,966,896.18, 29,953,655.76 and 7,009,684.20 is: 10,515,688.85
Step by Step Solution
- Step 1: Write the proportion equation
19,966,896.18 : 29,953,655.76 = 7,009,684.20 : x - Step 2: Convert to fraction form
19,966,896.18/29,953,655.76 = 7,009,684.20/x - Step 3: Cross multiply
19,966,896.18x = 29,953,655.76 × 7,009,684.20 - Step 4: Simplify right side
19,966,896.18x = 209,965,667,513,111 - Step 5: Solve for x
x = 209,965,667,513,111/19,966,896.18 - Step 6: Final answer
x = 10,515,688.85
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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.