Home / 39,132.40-58,698.60-11,430.40

Finding the Fourth Proportional to 39,132.40, 58,698.60 and 11,430.40

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Solution

The fourth proportional to 39,132.40, 58,698.60 and 11,430.40 is: 17,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,132.40 : 58,698.60 = 11,430.40 : x
  2. Step 2: Convert to fraction form
    39,132.40/58,698.60 = 11,430.40/x
  3. Step 3: Cross multiply
    39,132.40x = 58,698.60 × 11,430.40
  4. Step 4: Simplify right side
    39,132.40x = 670,948,477.44
  5. Step 5: Solve for x
    x = 670,948,477.44/39,132.40
  6. Step 6: Final answer
    x = 17,145.60

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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.