Finding the Fourth Proportional to 18,444,301.80, 25,455,295.35 and 15,341,350.74
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Solution
The fourth proportional to 18,444,301.80, 25,455,295.35 and 15,341,350.74 is: 21,172,859.69
Step by Step Solution
- Step 1: Write the proportion equation
18,444,301.80 : 25,455,295.35 = 15,341,350.74 : x - Step 2: Convert to fraction form
18,444,301.80/25,455,295.35 = 15,341,350.74/x - Step 3: Cross multiply
18,444,301.80x = 25,455,295.35 × 15,341,350.74 - Step 4: Simplify right side
18,444,301.80x = 390,518,614,154,641.06 - Step 5: Solve for x
x = 390,518,614,154,641.06/18,444,301.80 - Step 6: Final answer
x = 21,172,859.69
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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.