Finding the Fourth Proportional to 19,854,381.47, 29,582,017.53 and 18,739,268.75
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Solution
The fourth proportional to 19,854,381.47, 29,582,017.53 and 18,739,268.75 is: 27,920,556.34
Step by Step Solution
- Step 1: Write the proportion equation
19,854,381.47 : 29,582,017.53 = 18,739,268.75 : x - Step 2: Convert to fraction form
19,854,381.47/29,582,017.53 = 18,739,268.75/x - Step 3: Cross multiply
19,854,381.47x = 29,582,017.53 × 18,739,268.75 - Step 4: Simplify right side
19,854,381.47x = 554,345,376,513,971.12 - Step 5: Solve for x
x = 554,345,376,513,971.12/19,854,381.47 - Step 6: Final answer
x = 27,920,556.34
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.