Finding the Fourth Proportional to 10,552,430.80, 15,828,646.20 and 8,160,946.30
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Solution
The fourth proportional to 10,552,430.80, 15,828,646.20 and 8,160,946.30 is: 12,241,419.45
Step by Step Solution
- Step 1: Write the proportion equation
10,552,430.80 : 15,828,646.20 = 8,160,946.30 : x - Step 2: Convert to fraction form
10,552,430.80/15,828,646.20 = 8,160,946.30/x - Step 3: Cross multiply
10,552,430.80x = 15,828,646.20 × 8,160,946.30 - Step 4: Simplify right side
10,552,430.80x = 129,176,731,639,899.05 - Step 5: Solve for x
x = 129,176,731,639,899.05/10,552,430.80 - Step 6: Final answer
x = 12,241,419.45
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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.