Finding the Fourth Proportional to 28,516,974.55, 39,353,435.36 and 15,464,230.09
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Solution
The fourth proportional to 28,516,974.55, 39,353,435.36 and 15,464,230.09 is: 21,340,643.21
Step by Step Solution
- Step 1: Write the proportion equation
28,516,974.55 : 39,353,435.36 = 15,464,230.09 : x - Step 2: Convert to fraction form
28,516,974.55/39,353,435.36 = 15,464,230.09/x - Step 3: Cross multiply
28,516,974.55x = 39,353,435.36 × 15,464,230.09 - Step 4: Simplify right side
28,516,974.55x = 608,570,579,238,982 - Step 5: Solve for x
x = 608,570,579,238,982/28,516,974.55 - Step 6: Final answer
x = 21,340,643.21
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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.