Finding the Fourth Proportional to 22,128,420.30, 33,192,630.45 and 18,620,909.70
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Solution
The fourth proportional to 22,128,420.30, 33,192,630.45 and 18,620,909.70 is: 27,931,364.55
Step by Step Solution
- Step 1: Write the proportion equation
22,128,420.30 : 33,192,630.45 = 18,620,909.70 : x - Step 2: Convert to fraction form
22,128,420.30/33,192,630.45 = 18,620,909.70/x - Step 3: Cross multiply
22,128,420.30x = 33,192,630.45 × 18,620,909.70 - Step 4: Simplify right side
22,128,420.30x = 618,076,974,314,920.38 - Step 5: Solve for x
x = 618,076,974,314,920.38/22,128,420.30 - Step 6: Final answer
x = 27,931,364.55
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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.