Finding the Fourth Proportional to 13,361,541.30, 18,439,141.35 and 7,249,969.80
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Solution
The fourth proportional to 13,361,541.30, 18,439,141.35 and 7,249,969.80 is: 10,005,074.63
Step by Step Solution
- Step 1: Write the proportion equation
13,361,541.30 : 18,439,141.35 = 7,249,969.80 : x - Step 2: Convert to fraction form
13,361,541.30/18,439,141.35 = 7,249,969.80/x - Step 3: Cross multiply
13,361,541.30x = 18,439,141.35 × 7,249,969.80 - Step 4: Simplify right side
13,361,541.30x = 133,683,217,925,431.23 - Step 5: Solve for x
x = 133,683,217,925,431.23/13,361,541.30 - Step 6: Final answer
x = 10,005,074.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.