Home / 39,448.40-59,150.70-13,138.79

Finding the Fourth Proportional to 39,448.40, 59,150.70 and 13,138.79

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Solution

The fourth proportional to 39,448.40, 59,150.70 and 13,138.79 is: 19,700.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,448.40 : 59,150.70 = 13,138.79 : x
  2. Step 2: Convert to fraction form
    39,448.40/59,150.70 = 13,138.79/x
  3. Step 3: Cross multiply
    39,448.40x = 59,150.70 × 13,138.79
  4. Step 4: Simplify right side
    39,448.40x = 777,168,329.90
  5. Step 5: Solve for x
    x = 777,168,329.90/39,448.40
  6. Step 6: Final answer
    x = 19,700.89

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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.