Home / 20,746.46-28,630.05-11,315

Finding the Fourth Proportional to 20,746.46, 28,630.05 and 11,315

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Solution

The fourth proportional to 20,746.46, 28,630.05 and 11,315 is: 15,614.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.46 : 28,630.05 = 11,315 : x
  2. Step 2: Convert to fraction form
    20,746.46/28,630.05 = 11,315/x
  3. Step 3: Cross multiply
    20,746.46x = 28,630.05 × 11,315
  4. Step 4: Simplify right side
    20,746.46x = 323,949,015.75
  5. Step 5: Solve for x
    x = 323,949,015.75/20,746.46
  6. Step 6: Final answer
    x = 15,614.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.