Home / 20,509.08-30,742.02-10,637.88

Finding the Fourth Proportional to 20,509.08, 30,742.02 and 10,637.88

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Solution

The fourth proportional to 20,509.08, 30,742.02 and 10,637.88 is: 15,945.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.08 : 30,742.02 = 10,637.88 : x
  2. Step 2: Convert to fraction form
    20,509.08/30,742.02 = 10,637.88/x
  3. Step 3: Cross multiply
    20,509.08x = 30,742.02 × 10,637.88
  4. Step 4: Simplify right side
    20,509.08x = 327,029,919.72
  5. Step 5: Solve for x
    x = 327,029,919.72/20,509.08
  6. Step 6: Final answer
    x = 15,945.62

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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.