Finding the Fourth Proportional to 21,660,862.96, 29,874,772.05 and 18,408,444.04
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Solution
The fourth proportional to 21,660,862.96, 29,874,772.05 and 18,408,444.04 is: 25,389,019.38
Step by Step Solution
- Step 1: Write the proportion equation
21,660,862.96 : 29,874,772.05 = 18,408,444.04 : x - Step 2: Convert to fraction form
21,660,862.96/29,874,772.05 = 18,408,444.04/x - Step 3: Cross multiply
21,660,862.96x = 29,874,772.05 × 18,408,444.04 - Step 4: Simplify right side
21,660,862.96x = 549,948,069,458,492.94 - Step 5: Solve for x
x = 549,948,069,458,492.94/21,660,862.96 - Step 6: Final answer
x = 25,389,019.38
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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.