Finding the Fourth Proportional to 13,209,238.84, 18,221,368.62 and 8,312,633.32
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Solution
The fourth proportional to 13,209,238.84, 18,221,368.62 and 8,312,633.32 is: 11,466,789.10
Step by Step Solution
- Step 1: Write the proportion equation
13,209,238.84 : 18,221,368.62 = 8,312,633.32 : x - Step 2: Convert to fraction form
13,209,238.84/18,221,368.62 = 8,312,633.32/x - Step 3: Cross multiply
13,209,238.84x = 18,221,368.62 × 8,312,633.32 - Step 4: Simplify right side
13,209,238.84x = 151,467,555,926,614.44 - Step 5: Solve for x
x = 151,467,555,926,614.44/13,209,238.84 - Step 6: Final answer
x = 11,466,789.10
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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.