Finding the Fourth Proportional to 12,372,931.68, 18,572,973.12 and 9,830,486.40
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Solution
The fourth proportional to 12,372,931.68, 18,572,973.12 and 9,830,486.40 is: 14,756,515.63
Step by Step Solution
- Step 1: Write the proportion equation
12,372,931.68 : 18,572,973.12 = 9,830,486.40 : x - Step 2: Convert to fraction form
12,372,931.68/18,572,973.12 = 9,830,486.40/x - Step 3: Cross multiply
12,372,931.68x = 18,572,973.12 × 9,830,486.40 - Step 4: Simplify right side
12,372,931.68x = 182,581,359,663,725.59 - Step 5: Solve for x
x = 182,581,359,663,725.59/12,372,931.68 - Step 6: Final answer
x = 14,756,515.63
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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.