Finding the Fourth Proportional to 28,692,046.63, 39,595,417.78 and 15,639,277.48
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Solution
The fourth proportional to 28,692,046.63, 39,595,417.78 and 15,639,277.48 is: 21,582,417.38
Step by Step Solution
- Step 1: Write the proportion equation
28,692,046.63 : 39,595,417.78 = 15,639,277.48 : x - Step 2: Convert to fraction form
28,692,046.63/39,595,417.78 = 15,639,277.48/x - Step 3: Cross multiply
28,692,046.63x = 39,595,417.78 × 15,639,277.48 - Step 4: Simplify right side
28,692,046.63x = 619,243,725,775,684.38 - Step 5: Solve for x
x = 619,243,725,775,684.38/28,692,046.63 - Step 6: Final answer
x = 21,582,417.38
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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.