Home / 31,485.60-43,437.78-18,049.68

Finding the Fourth Proportional to 31,485.60, 43,437.78 and 18,049.68

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Solution

The fourth proportional to 31,485.60, 43,437.78 and 18,049.68 is: 24,901.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,485.60 : 43,437.78 = 18,049.68 : x
  2. Step 2: Convert to fraction form
    31,485.60/43,437.78 = 18,049.68/x
  3. Step 3: Cross multiply
    31,485.60x = 43,437.78 × 18,049.68
  4. Step 4: Simplify right side
    31,485.60x = 784,038,028.91
  5. Step 5: Solve for x
    x = 784,038,028.91/31,485.60
  6. Step 6: Final answer
    x = 24,901.48

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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.