Finding the Fourth Proportional to 13,013,274.13, 19,403,569.07 and 12,655,742.53
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Solution
The fourth proportional to 13,013,274.13, 19,403,569.07 and 12,655,742.53 is: 18,870,468.10
Step by Step Solution
- Step 1: Write the proportion equation
13,013,274.13 : 19,403,569.07 = 12,655,742.53 : x - Step 2: Convert to fraction form
13,013,274.13/19,403,569.07 = 12,655,742.53/x - Step 3: Cross multiply
13,013,274.13x = 19,403,569.07 × 12,655,742.53 - Step 4: Simplify right side
13,013,274.13x = 245,566,574,312,991.53 - Step 5: Solve for x
x = 245,566,574,312,991.53/13,013,274.13 - Step 6: Final answer
x = 18,870,468.10
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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.