Home / 20,746.30-31,119.20-14,635.30

Finding the Fourth Proportional to 20,746.30, 31,119.20 and 14,635.30

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Solution

The fourth proportional to 20,746.30, 31,119.20 and 14,635.30 is: 21,952.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.30 : 31,119.20 = 14,635.30 : x
  2. Step 2: Convert to fraction form
    20,746.30/31,119.20 = 14,635.30/x
  3. Step 3: Cross multiply
    20,746.30x = 31,119.20 × 14,635.30
  4. Step 4: Simplify right side
    20,746.30x = 455,438,827.76
  5. Step 5: Solve for x
    x = 455,438,827.76/20,746.30
  6. Step 6: Final answer
    x = 21,952.77

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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.