Finding the Fourth Proportional to 21,575,653.36, 29,775,306.44 and 12,408,303.28
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Solution
The fourth proportional to 21,575,653.36, 29,775,306.44 and 12,408,303.28 is: 17,123,978.88
Step by Step Solution
- Step 1: Write the proportion equation
21,575,653.36 : 29,775,306.44 = 12,408,303.28 : x - Step 2: Convert to fraction form
21,575,653.36/29,775,306.44 = 12,408,303.28/x - Step 3: Cross multiply
21,575,653.36x = 29,775,306.44 × 12,408,303.28 - Step 4: Simplify right side
21,575,653.36x = 369,461,032,562,457.12 - Step 5: Solve for x
x = 369,461,032,562,457.12/21,575,653.36 - Step 6: Final answer
x = 17,123,978.88
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1.5x scale
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.