Finding the Fourth Proportional to 13,357,206.78, 18,432,951.30 and 7,555,864.74
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Solution
The fourth proportional to 13,357,206.78, 18,432,951.30 and 7,555,864.74 is: 10,427,096.70
Step by Step Solution
- Step 1: Write the proportion equation
13,357,206.78 : 18,432,951.30 = 7,555,864.74 : x - Step 2: Convert to fraction form
13,357,206.78/18,432,951.30 = 7,555,864.74/x - Step 3: Cross multiply
13,357,206.78x = 18,432,951.30 × 7,555,864.74 - Step 4: Simplify right side
13,357,206.78x = 139,276,886,781,807.17 - Step 5: Solve for x
x = 139,276,886,781,807.17/13,357,206.78 - Step 6: Final answer
x = 10,427,096.70
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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.