Home / 20,581.68-28,417.36-12,626.46

Finding the Fourth Proportional to 20,581.68, 28,417.36 and 12,626.46

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Solution

The fourth proportional to 20,581.68, 28,417.36 and 12,626.46 is: 17,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.68 : 28,417.36 = 12,626.46 : x
  2. Step 2: Convert to fraction form
    20,581.68/28,417.36 = 12,626.46/x
  3. Step 3: Cross multiply
    20,581.68x = 28,417.36 × 12,626.46
  4. Step 4: Simplify right side
    20,581.68x = 358,810,659.35
  5. Step 5: Solve for x
    x = 358,810,659.35/20,581.68
  6. Step 6: Final answer
    x = 17,433.50

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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.