Finding the Fourth Proportional to 10,439,423.60, 15,659,135.40 and 8,759,807.60
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Solution
The fourth proportional to 10,439,423.60, 15,659,135.40 and 8,759,807.60 is: 13,139,711.40
Step by Step Solution
- Step 1: Write the proportion equation
10,439,423.60 : 15,659,135.40 = 8,759,807.60 : x - Step 2: Convert to fraction form
10,439,423.60/15,659,135.40 = 8,759,807.60/x - Step 3: Cross multiply
10,439,423.60x = 15,659,135.40 × 8,759,807.60 - Step 4: Simplify right side
10,439,423.60x = 137,171,013,286,349.03 - Step 5: Solve for x
x = 137,171,013,286,349.03/10,439,423.60 - Step 6: Final answer
x = 13,139,711.40
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Similar ratio
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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.