Finding the Fourth Proportional to 28,423,962.40, 39,237,877.84 and 18,124,529.44
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Solution
The fourth proportional to 28,423,962.40, 39,237,877.84 and 18,124,529.44 is: 25,020,018.75
Step by Step Solution
- Step 1: Write the proportion equation
28,423,962.40 : 39,237,877.84 = 18,124,529.44 : x - Step 2: Convert to fraction form
28,423,962.40/39,237,877.84 = 18,124,529.44/x - Step 3: Cross multiply
28,423,962.40x = 39,237,877.84 × 18,124,529.44 - Step 4: Simplify right side
28,423,962.40x = 711,168,072,074,203.75 - Step 5: Solve for x
x = 711,168,072,074,203.75/28,423,962.40 - Step 6: Final answer
x = 25,020,018.75
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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.