Home / 20,866.30-31,113.32-18,548.08

Finding the Fourth Proportional to 20,866.30, 31,113.32 and 18,548.08

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Solution

The fourth proportional to 20,866.30, 31,113.32 and 18,548.08 is: 27,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.30 : 31,113.32 = 18,548.08 : x
  2. Step 2: Convert to fraction form
    20,866.30/31,113.32 = 18,548.08/x
  3. Step 3: Cross multiply
    20,866.30x = 31,113.32 × 18,548.08
  4. Step 4: Simplify right side
    20,866.30x = 577,092,348.43
  5. Step 5: Solve for x
    x = 577,092,348.43/20,866.30
  6. Step 6: Final answer
    x = 27,656.67

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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.