Finding the Fourth Proportional to 28,438,056.08, 39,244,801.20 and 15,385,595.18
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Solution
The fourth proportional to 28,438,056.08, 39,244,801.20 and 15,385,595.18 is: 21,232,274.90
Step by Step Solution
- Step 1: Write the proportion equation
28,438,056.08 : 39,244,801.20 = 15,385,595.18 : x - Step 2: Convert to fraction form
28,438,056.08/39,244,801.20 = 15,385,595.18/x - Step 3: Cross multiply
28,438,056.08x = 39,244,801.20 × 15,385,595.18 - Step 4: Simplify right side
28,438,056.08x = 603,804,624,182,778.25 - Step 5: Solve for x
x = 603,804,624,182,778.25/28,438,056.08 - Step 6: Final answer
x = 21,232,274.90
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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.