Finding the Fourth Proportional to 19,937,461.21, 27,518,815.29 and 12,985,462.06
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Solution
The fourth proportional to 19,937,461.21, 27,518,815.29 and 12,985,462.06 is: 17,923,271.58
Step by Step Solution
- Step 1: Write the proportion equation
19,937,461.21 : 27,518,815.29 = 12,985,462.06 : x - Step 2: Convert to fraction form
19,937,461.21/27,518,815.29 = 12,985,462.06/x - Step 3: Cross multiply
19,937,461.21x = 27,518,815.29 × 12,985,462.06 - Step 4: Simplify right side
19,937,461.21x = 357,344,531,884,442.88 - Step 5: Solve for x
x = 357,344,531,884,442.88/19,937,461.21 - Step 6: Final answer
x = 17,923,271.58
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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.