Finding the Fourth Proportional to 13,130,199.74, 18,122,698.95 and 7,699,441.34
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Solution
The fourth proportional to 13,130,199.74, 18,122,698.95 and 7,699,441.34 is: 10,627,001.89
Step by Step Solution
- Step 1: Write the proportion equation
13,130,199.74 : 18,122,698.95 = 7,699,441.34 : x - Step 2: Convert to fraction form
13,130,199.74/18,122,698.95 = 7,699,441.34/x - Step 3: Cross multiply
13,130,199.74x = 18,122,698.95 × 7,699,441.34 - Step 4: Simplify right side
13,130,199.74x = 139,534,657,488,004.58 - Step 5: Solve for x
x = 139,534,657,488,004.58/13,130,199.74 - Step 6: Final answer
x = 10,627,001.89
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1.5x scale
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.