Finding the Fourth Proportional to 19,729,273.20, 29,593,909.80 and 18,217,618.80
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Solution
The fourth proportional to 19,729,273.20, 29,593,909.80 and 18,217,618.80 is: 27,326,428.20
Step by Step Solution
- Step 1: Write the proportion equation
19,729,273.20 : 29,593,909.80 = 18,217,618.80 : x - Step 2: Convert to fraction form
19,729,273.20/29,593,909.80 = 18,217,618.80/x - Step 3: Cross multiply
19,729,273.20x = 29,593,909.80 × 18,217,618.80 - Step 4: Simplify right side
19,729,273.20x = 539,130,567,537,984.25 - Step 5: Solve for x
x = 539,130,567,537,984.25/19,729,273.20 - Step 6: Final answer
x = 27,326,428.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.