Home / 26,921.81-40,390.98-13,783.40

Finding the Fourth Proportional to 26,921.81, 40,390.98 and 13,783.40

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Solution

The fourth proportional to 26,921.81, 40,390.98 and 13,783.40 is: 20,679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,921.81 : 40,390.98 = 13,783.40 : x
  2. Step 2: Convert to fraction form
    26,921.81/40,390.98 = 13,783.40/x
  3. Step 3: Cross multiply
    26,921.81x = 40,390.98 × 13,783.40
  4. Step 4: Simplify right side
    26,921.81x = 556,725,033.73
  5. Step 5: Solve for x
    x = 556,725,033.73/26,921.81
  6. Step 6: Final answer
    x = 20,679.33

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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.