Finding the Fourth Proportional to 13,308,921.10, 19,963,316.85 and 5,216,178.70
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Solution
The fourth proportional to 13,308,921.10, 19,963,316.85 and 5,216,178.70 is: 7,824,242.65
Step by Step Solution
- Step 1: Write the proportion equation
13,308,921.10 : 19,963,316.85 = 5,216,178.70 : x - Step 2: Convert to fraction form
13,308,921.10/19,963,316.85 = 5,216,178.70/x - Step 3: Cross multiply
13,308,921.10x = 19,963,316.85 × 5,216,178.70 - Step 4: Simplify right side
13,308,921.10x = 104,132,228,134,321.11 - Step 5: Solve for x
x = 104,132,228,134,321.11/13,308,921.10 - Step 6: Final answer
x = 7,824,242.65
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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.