Home / 43,285.40-64,928.10-13,712.30

Finding the Fourth Proportional to 43,285.40, 64,928.10 and 13,712.30

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Solution

The fourth proportional to 43,285.40, 64,928.10 and 13,712.30 is: 20,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,285.40 : 64,928.10 = 13,712.30 : x
  2. Step 2: Convert to fraction form
    43,285.40/64,928.10 = 13,712.30/x
  3. Step 3: Cross multiply
    43,285.40x = 64,928.10 × 13,712.30
  4. Step 4: Simplify right side
    43,285.40x = 890,313,585.63
  5. Step 5: Solve for x
    x = 890,313,585.63/43,285.40
  6. Step 6: Final answer
    x = 20,568.45

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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.