Finding the Fourth Proportional to 20,550,221.12, 28,358,088.40 and 11,255,937.68
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Solution
The fourth proportional to 20,550,221.12, 28,358,088.40 and 11,255,937.68 is: 15,532,527.55
Step by Step Solution
- Step 1: Write the proportion equation
20,550,221.12 : 28,358,088.40 = 11,255,937.68 : x - Step 2: Convert to fraction form
20,550,221.12/28,358,088.40 = 11,255,937.68/x - Step 3: Cross multiply
20,550,221.12x = 28,358,088.40 × 11,255,937.68 - Step 4: Simplify right side
20,550,221.12x = 319,196,875,754,330.88 - Step 5: Solve for x
x = 319,196,875,754,330.88/20,550,221.12 - Step 6: Final answer
x = 15,532,527.55
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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.