Home / 31,520.80-43,501.08-18,096.40

Finding the Fourth Proportional to 31,520.80, 43,501.08 and 18,096.40

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Solution

The fourth proportional to 31,520.80, 43,501.08 and 18,096.40 is: 24,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,520.80 : 43,501.08 = 18,096.40 : x
  2. Step 2: Convert to fraction form
    31,520.80/43,501.08 = 18,096.40/x
  3. Step 3: Cross multiply
    31,520.80x = 43,501.08 × 18,096.40
  4. Step 4: Simplify right side
    31,520.80x = 787,212,944.11
  5. Step 5: Solve for x
    x = 787,212,944.11/31,520.80
  6. Step 6: Final answer
    x = 24,974.40

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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.