Home / 13,758.20-20,637.30-9,783.80

Finding the Fourth Proportional to 13,758.20, 20,637.30 and 9,783.80

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Solution

The fourth proportional to 13,758.20, 20,637.30 and 9,783.80 is: 14,675.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.20 : 20,637.30 = 9,783.80 : x
  2. Step 2: Convert to fraction form
    13,758.20/20,637.30 = 9,783.80/x
  3. Step 3: Cross multiply
    13,758.20x = 20,637.30 × 9,783.80
  4. Step 4: Simplify right side
    13,758.20x = 201,911,215.74
  5. Step 5: Solve for x
    x = 201,911,215.74/13,758.20
  6. Step 6: Final answer
    x = 14,675.70

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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.