Home / 20,900.64-31,363.56-19,587.36

Finding the Fourth Proportional to 20,900.64, 31,363.56 and 19,587.36

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Solution

The fourth proportional to 20,900.64, 31,363.56 and 19,587.36 is: 29,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.64 : 31,363.56 = 19,587.36 : x
  2. Step 2: Convert to fraction form
    20,900.64/31,363.56 = 19,587.36/x
  3. Step 3: Cross multiply
    20,900.64x = 31,363.56 × 19,587.36
  4. Step 4: Simplify right side
    20,900.64x = 614,329,340.60
  5. Step 5: Solve for x
    x = 614,329,340.60/20,900.64
  6. Step 6: Final answer
    x = 29,392.85

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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.