Home / 26,289.80-39,434.70-15,921.80

Finding the Fourth Proportional to 26,289.80, 39,434.70 and 15,921.80

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Solution

The fourth proportional to 26,289.80, 39,434.70 and 15,921.80 is: 23,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,289.80 : 39,434.70 = 15,921.80 : x
  2. Step 2: Convert to fraction form
    26,289.80/39,434.70 = 15,921.80/x
  3. Step 3: Cross multiply
    26,289.80x = 39,434.70 × 15,921.80
  4. Step 4: Simplify right side
    26,289.80x = 627,871,406.46
  5. Step 5: Solve for x
    x = 627,871,406.46/26,289.80
  6. Step 6: Final answer
    x = 23,882.70

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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.