Finding the Fourth Proportional to 28,349,742.06, 39,120,132.96 and 15,789,838.44
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Solution
The fourth proportional to 28,349,742.06, 39,120,132.96 and 15,789,838.44 is: 21,788,578.46
Step by Step Solution
- Step 1: Write the proportion equation
28,349,742.06 : 39,120,132.96 = 15,789,838.44 : x - Step 2: Convert to fraction form
28,349,742.06/39,120,132.96 = 15,789,838.44/x - Step 3: Cross multiply
28,349,742.06x = 39,120,132.96 × 15,789,838.44 - Step 4: Simplify right side
28,349,742.06x = 617,700,579,189,719 - Step 5: Solve for x
x = 617,700,579,189,719/28,349,742.06 - Step 6: Final answer
x = 21,788,578.46
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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.