Home / 20,709.18-31,073.40-8,866.59

Finding the Fourth Proportional to 20,709.18, 31,073.40 and 8,866.59

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Solution

The fourth proportional to 20,709.18, 31,073.40 and 8,866.59 is: 13,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.18 : 31,073.40 = 8,866.59 : x
  2. Step 2: Convert to fraction form
    20,709.18/31,073.40 = 8,866.59/x
  3. Step 3: Cross multiply
    20,709.18x = 31,073.40 × 8,866.59
  4. Step 4: Simplify right side
    20,709.18x = 275,515,097.71
  5. Step 5: Solve for x
    x = 275,515,097.71/20,709.18
  6. Step 6: Final answer
    x = 13,304.01

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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.