Home / 20,866.67-31,113.90-18,548.45

Finding the Fourth Proportional to 20,866.67, 31,113.90 and 18,548.45

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Solution

The fourth proportional to 20,866.67, 31,113.90 and 18,548.45 is: 27,657.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.67 : 31,113.90 = 18,548.45 : x
  2. Step 2: Convert to fraction form
    20,866.67/31,113.90 = 18,548.45/x
  3. Step 3: Cross multiply
    20,866.67x = 31,113.90 × 18,548.45
  4. Step 4: Simplify right side
    20,866.67x = 577,114,626.68
  5. Step 5: Solve for x
    x = 577,114,626.68/20,866.67
  6. Step 6: Final answer
    x = 27,657.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.