Finding the Fourth Proportional to 13,121,188.98, 18,107,248.58 and 7,319,970.71
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Solution
The fourth proportional to 13,121,188.98, 18,107,248.58 and 7,319,970.71 is: 10,101,563.91
Step by Step Solution
- Step 1: Write the proportion equation
13,121,188.98 : 18,107,248.58 = 7,319,970.71 : x - Step 2: Convert to fraction form
13,121,188.98/18,107,248.58 = 7,319,970.71/x - Step 3: Cross multiply
13,121,188.98x = 18,107,248.58 × 7,319,970.71 - Step 4: Simplify right side
13,121,188.98x = 132,544,529,117,152.98 - Step 5: Solve for x
x = 132,544,529,117,152.98/13,121,188.98 - Step 6: Final answer
x = 10,101,563.91
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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.