Home / 31,709.80-47,532.30-18,555.40

Finding the Fourth Proportional to 31,709.80, 47,532.30 and 18,555.40

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Solution

The fourth proportional to 31,709.80, 47,532.30 and 18,555.40 is: 27,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709.80 : 47,532.30 = 18,555.40 : x
  2. Step 2: Convert to fraction form
    31,709.80/47,532.30 = 18,555.40/x
  3. Step 3: Cross multiply
    31,709.80x = 47,532.30 × 18,555.40
  4. Step 4: Simplify right side
    31,709.80x = 881,980,839.42
  5. Step 5: Solve for x
    x = 881,980,839.42/31,709.80
  6. Step 6: Final answer
    x = 27,814.14

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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.