Home / 31,631.31-47,463.89-20,535.39

Finding the Fourth Proportional to 31,631.31, 47,463.89 and 20,535.39

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Solution

The fourth proportional to 31,631.31, 47,463.89 and 20,535.39 is: 30,814.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631.31 : 47,463.89 = 20,535.39 : x
  2. Step 2: Convert to fraction form
    31,631.31/47,463.89 = 20,535.39/x
  3. Step 3: Cross multiply
    31,631.31x = 47,463.89 × 20,535.39
  4. Step 4: Simplify right side
    31,631.31x = 974,689,389.39
  5. Step 5: Solve for x
    x = 974,689,389.39/31,631.31
  6. Step 6: Final answer
    x = 30,814.07

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1.5x scale

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.