Finding the Fourth Proportional to 28,448,420.85, 39,258,945.99 and 15,395,681.79
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Solution
The fourth proportional to 28,448,420.85, 39,258,945.99 and 15,395,681.79 is: 21,246,108.63
Step by Step Solution
- Step 1: Write the proportion equation
28,448,420.85 : 39,258,945.99 = 15,395,681.79 : x - Step 2: Convert to fraction form
28,448,420.85/39,258,945.99 = 15,395,681.79/x - Step 3: Cross multiply
28,448,420.85x = 39,258,945.99 × 15,395,681.79 - Step 4: Simplify right side
28,448,420.85x = 604,418,239,872,836.50 - Step 5: Solve for x
x = 604,418,239,872,836.50/28,448,420.85 - Step 6: Final answer
x = 21,246,108.63
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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.