Finding the Fourth Proportional to 15,806,845.68, 21,811,777.92 and 8,929,999.68
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Solution
The fourth proportional to 15,806,845.68, 21,811,777.92 and 8,929,999.68 is: 12,322,456.60
Step by Step Solution
- Step 1: Write the proportion equation
15,806,845.68 : 21,811,777.92 = 8,929,999.68 : x - Step 2: Convert to fraction form
15,806,845.68/21,811,777.92 = 8,929,999.68/x - Step 3: Cross multiply
15,806,845.68x = 21,811,777.92 × 8,929,999.68 - Step 4: Simplify right side
15,806,845.68x = 194,779,169,845,831.06 - Step 5: Solve for x
x = 194,779,169,845,831.06/15,806,845.68 - Step 6: Final answer
x = 12,322,456.60
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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.