Finding the Fourth Proportional to 19,937,458.21, 27,518,811.15 and 12,985,459.06
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Solution
The fourth proportional to 19,937,458.21, 27,518,811.15 and 12,985,459.06 is: 17,923,267.44
Step by Step Solution
- Step 1: Write the proportion equation
19,937,458.21 : 27,518,811.15 = 12,985,459.06 : x - Step 2: Convert to fraction form
19,937,458.21/27,518,811.15 = 12,985,459.06/x - Step 3: Cross multiply
19,937,458.21x = 27,518,811.15 × 12,985,459.06 - Step 4: Simplify right side
19,937,458.21x = 357,344,395,568,196.50 - Step 5: Solve for x
x = 357,344,395,568,196.50/19,937,458.21 - Step 6: Final answer
x = 17,923,267.44
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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.