Finding the Fourth Proportional to 13,291,931.84, 18,342,412.46 and 7,331,574.84
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Solution
The fourth proportional to 13,291,931.84, 18,342,412.46 and 7,331,574.84 is: 10,117,323.15
Step by Step Solution
- Step 1: Write the proportion equation
13,291,931.84 : 18,342,412.46 = 7,331,574.84 : x - Step 2: Convert to fraction form
13,291,931.84/18,342,412.46 = 7,331,574.84/x - Step 3: Cross multiply
13,291,931.84x = 18,342,412.46 × 7,331,574.84 - Step 4: Simplify right side
13,291,931.84x = 134,478,769,659,980.61 - Step 5: Solve for x
x = 134,478,769,659,980.61/13,291,931.84 - Step 6: Final answer
x = 10,117,323.15
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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.