Finding the Fourth Proportional to 20,709,854.40, 31,029,352.20 and 13,127,962.80
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Solution
The fourth proportional to 20,709,854.40, 31,029,352.20 and 13,127,962.80 is: 19,669,485.53
Step by Step Solution
- Step 1: Write the proportion equation
20,709,854.40 : 31,029,352.20 = 13,127,962.80 : x - Step 2: Convert to fraction form
20,709,854.40/31,029,352.20 = 13,127,962.80/x - Step 3: Cross multiply
20,709,854.40x = 31,029,352.20 × 13,127,962.80 - Step 4: Simplify right side
20,709,854.40x = 407,352,181,389,698.19 - Step 5: Solve for x
x = 407,352,181,389,698.19/20,709,854.40 - Step 6: Final answer
x = 19,669,485.53
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.