Finding the Fourth Proportional to 28,516,972.05, 39,353,431.91 and 15,464,227.59
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Solution
The fourth proportional to 28,516,972.05, 39,353,431.91 and 15,464,227.59 is: 21,340,639.76
Step by Step Solution
- Step 1: Write the proportion equation
28,516,972.05 : 39,353,431.91 = 15,464,227.59 : x - Step 2: Convert to fraction form
28,516,972.05/39,353,431.91 = 15,464,227.59/x - Step 3: Cross multiply
28,516,972.05x = 39,353,431.91 × 15,464,227.59 - Step 4: Simplify right side
28,516,972.05x = 608,570,427,426,487.25 - Step 5: Solve for x
x = 608,570,427,426,487.25/28,516,972.05 - Step 6: Final answer
x = 21,340,639.76
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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.