Finding the Fourth Proportional to 28,516,971.30, 39,353,430.87 and 15,464,226.84
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Solution
The fourth proportional to 28,516,971.30, 39,353,430.87 and 15,464,226.84 is: 21,340,638.72
Step by Step Solution
- Step 1: Write the proportion equation
28,516,971.30 : 39,353,430.87 = 15,464,226.84 : x - Step 2: Convert to fraction form
28,516,971.30/39,353,430.87 = 15,464,226.84/x - Step 3: Cross multiply
28,516,971.30x = 39,353,430.87 × 15,464,226.84 - Step 4: Simplify right side
28,516,971.30x = 608,570,381,905,938.50 - Step 5: Solve for x
x = 608,570,381,905,938.50/28,516,971.30 - Step 6: Final answer
x = 21,340,638.72
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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.