Home / 13,439.52-18,565.26-12,783.48

Finding the Fourth Proportional to 13,439.52, 18,565.26 and 12,783.48

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Solution

The fourth proportional to 13,439.52, 18,565.26 and 12,783.48 is: 17,659.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.52 : 18,565.26 = 12,783.48 : x
  2. Step 2: Convert to fraction form
    13,439.52/18,565.26 = 12,783.48/x
  3. Step 3: Cross multiply
    13,439.52x = 18,565.26 × 12,783.48
  4. Step 4: Simplify right side
    13,439.52x = 237,328,629.90
  5. Step 5: Solve for x
    x = 237,328,629.90/13,439.52
  6. Step 6: Final answer
    x = 17,659.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.