Finding the Fourth Proportional to 28,069,419.14, 38,731,675.74 and 15,677,985.68
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Solution
The fourth proportional to 28,069,419.14, 38,731,675.74 and 15,677,985.68 is: 21,633,317.55
Step by Step Solution
- Step 1: Write the proportion equation
28,069,419.14 : 38,731,675.74 = 15,677,985.68 : x - Step 2: Convert to fraction form
28,069,419.14/38,731,675.74 = 15,677,985.68/x - Step 3: Cross multiply
28,069,419.14x = 38,731,675.74 × 15,677,985.68 - Step 4: Simplify right side
28,069,419.14x = 607,234,657,614,123.38 - Step 5: Solve for x
x = 607,234,657,614,123.38/28,069,419.14 - Step 6: Final answer
x = 21,633,317.55
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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.