Finding the Fourth Proportional to 28,349,739.06, 39,120,128.82 and 15,789,835.44
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Solution
The fourth proportional to 28,349,739.06, 39,120,128.82 and 15,789,835.44 is: 21,788,574.32
Step by Step Solution
- Step 1: Write the proportion equation
28,349,739.06 : 39,120,128.82 = 15,789,835.44 : x - Step 2: Convert to fraction form
28,349,739.06/39,120,128.82 = 15,789,835.44/x - Step 3: Cross multiply
28,349,739.06x = 39,120,128.82 × 15,789,835.44 - Step 4: Simplify right side
28,349,739.06x = 617,700,396,459,401.38 - Step 5: Solve for x
x = 617,700,396,459,401.38/28,349,739.06 - Step 6: Final answer
x = 21,788,574.32
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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.