Finding the Fourth Proportional to 13,125,427.20, 19,688,140.80 and 13,125,427.20
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Solution
The fourth proportional to 13,125,427.20, 19,688,140.80 and 13,125,427.20 is: 19,688,140.80
Step by Step Solution
- Step 1: Write the proportion equation
13,125,427.20 : 19,688,140.80 = 13,125,427.20 : x - Step 2: Convert to fraction form
13,125,427.20/19,688,140.80 = 13,125,427.20/x - Step 3: Cross multiply
13,125,427.20x = 19,688,140.80 × 13,125,427.20 - Step 4: Simplify right side
13,125,427.20x = 258,415,258,773,749.75 - Step 5: Solve for x
x = 258,415,258,773,749.75/13,125,427.20 - Step 6: Final answer
x = 19,688,140.80
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1.5x scale
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.