Home / 13,935.48-20,905.18-4,075.50

Finding the Fourth Proportional to 13,935.48, 20,905.18 and 4,075.50

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Solution

The fourth proportional to 13,935.48, 20,905.18 and 4,075.50 is: 6,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.48 : 20,905.18 = 4,075.50 : x
  2. Step 2: Convert to fraction form
    13,935.48/20,905.18 = 4,075.50/x
  3. Step 3: Cross multiply
    13,935.48x = 20,905.18 × 4,075.50
  4. Step 4: Simplify right side
    13,935.48x = 85,199,061.09
  5. Step 5: Solve for x
    x = 85,199,061.09/13,935.48
  6. Step 6: Final answer
    x = 6,113.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.