Finding the Fourth Proportional to 13,438,319.08, 18,546,454.74 and 7,637,972.74
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Solution
The fourth proportional to 13,438,319.08, 18,546,454.74 and 7,637,972.74 is: 10,541,297.23
Step by Step Solution
- Step 1: Write the proportion equation
13,438,319.08 : 18,546,454.74 = 7,637,972.74 : x - Step 2: Convert to fraction form
13,438,319.08/18,546,454.74 = 7,637,972.74/x - Step 3: Cross multiply
13,438,319.08x = 18,546,454.74 × 7,637,972.74 - Step 4: Simplify right side
13,438,319.08x = 141,657,315,727,763.78 - Step 5: Solve for x
x = 141,657,315,727,763.78/13,438,319.08 - Step 6: Final answer
x = 10,541,297.23
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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.