Finding the Fourth Proportional to 13,301,929.46, 18,357,206.91 and 8,405,364.71
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Solution
The fourth proportional to 13,301,929.46, 18,357,206.91 and 8,405,364.71 is: 11,599,747.21
Step by Step Solution
- Step 1: Write the proportion equation
13,301,929.46 : 18,357,206.91 = 8,405,364.71 : x - Step 2: Convert to fraction form
13,301,929.46/18,357,206.91 = 8,405,364.71/x - Step 3: Cross multiply
13,301,929.46x = 18,357,206.91 × 8,405,364.71 - Step 4: Simplify right side
13,301,929.46x = 154,299,019,135,482.16 - Step 5: Solve for x
x = 154,299,019,135,482.16/13,301,929.46 - Step 6: Final answer
x = 11,599,747.21
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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.