Home / 43,143.56-64,715.28-13,563.98

Finding the Fourth Proportional to 43,143.56, 64,715.28 and 13,563.98

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Solution

The fourth proportional to 43,143.56, 64,715.28 and 13,563.98 is: 20,345.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,143.56 : 64,715.28 = 13,563.98 : x
  2. Step 2: Convert to fraction form
    43,143.56/64,715.28 = 13,563.98/x
  3. Step 3: Cross multiply
    43,143.56x = 64,715.28 × 13,563.98
  4. Step 4: Simplify right side
    43,143.56x = 877,796,763.61
  5. Step 5: Solve for x
    x = 877,796,763.61/43,143.56
  6. Step 6: Final answer
    x = 20,345.95

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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.