Finding the Fourth Proportional to 28,602,390.72, 39,471,748.30 and 15,549,699.49
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Solution
The fourth proportional to 28,602,390.72, 39,471,748.30 and 15,549,699.49 is: 21,458,829.45
Step by Step Solution
- Step 1: Write the proportion equation
28,602,390.72 : 39,471,748.30 = 15,549,699.49 : x - Step 2: Convert to fraction form
28,602,390.72/39,471,748.30 = 15,549,699.49/x - Step 3: Cross multiply
28,602,390.72x = 39,471,748.30 × 15,549,699.49 - Step 4: Simplify right side
28,602,390.72x = 613,773,824,409,918.38 - Step 5: Solve for x
x = 613,773,824,409,918.38/28,602,390.72 - Step 6: Final answer
x = 21,458,829.45
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1.5x scale
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.