Home / 26,830.60-40,212.30-13,688.20

Finding the Fourth Proportional to 26,830.60, 40,212.30 and 13,688.20

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Solution

The fourth proportional to 26,830.60, 40,212.30 and 13,688.20 is: 20,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,830.60 : 40,212.30 = 13,688.20 : x
  2. Step 2: Convert to fraction form
    26,830.60/40,212.30 = 13,688.20/x
  3. Step 3: Cross multiply
    26,830.60x = 40,212.30 × 13,688.20
  4. Step 4: Simplify right side
    26,830.60x = 550,434,004.86
  5. Step 5: Solve for x
    x = 550,434,004.86/26,830.60
  6. Step 6: Final answer
    x = 20,515.16

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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.