Finding the Fourth Proportional to 15,316,838.84, 21,137,987.45 and 8,613,281.63
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Solution
The fourth proportional to 15,316,838.84, 21,137,987.45 and 8,613,281.63 is: 11,886,750.32
Step by Step Solution
- Step 1: Write the proportion equation
15,316,838.84 : 21,137,987.45 = 8,613,281.63 : x - Step 2: Convert to fraction form
15,316,838.84/21,137,987.45 = 8,613,281.63/x - Step 3: Cross multiply
15,316,838.84x = 21,137,987.45 × 8,613,281.63 - Step 4: Simplify right side
15,316,838.84x = 182,067,439,072,633.72 - Step 5: Solve for x
x = 182,067,439,072,633.72/15,316,838.84 - Step 6: Final answer
x = 11,886,750.32
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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.