Finding the Fourth Proportional to 28,448,420.35, 39,258,945.29 and 15,395,681.29
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Solution
The fourth proportional to 28,448,420.35, 39,258,945.29 and 15,395,681.29 is: 21,246,107.94
Step by Step Solution
- Step 1: Write the proportion equation
28,448,420.35 : 39,258,945.29 = 15,395,681.29 : x - Step 2: Convert to fraction form
28,448,420.35/39,258,945.29 = 15,395,681.29/x - Step 3: Cross multiply
28,448,420.35x = 39,258,945.29 × 15,395,681.29 - Step 4: Simplify right side
28,448,420.35x = 604,418,209,466,386.62 - Step 5: Solve for x
x = 604,418,209,466,386.62/28,448,420.35 - Step 6: Final answer
x = 21,246,107.94
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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.