Home / 31,003.02-42,803.91-20,410.92

Finding the Fourth Proportional to 31,003.02, 42,803.91 and 20,410.92

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Solution

The fourth proportional to 31,003.02, 42,803.91 and 20,410.92 is: 28,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,003.02 : 42,803.91 = 20,410.92 : x
  2. Step 2: Convert to fraction form
    31,003.02/42,803.91 = 20,410.92/x
  3. Step 3: Cross multiply
    31,003.02x = 42,803.91 × 20,410.92
  4. Step 4: Simplify right side
    31,003.02x = 873,667,182.70
  5. Step 5: Solve for x
    x = 873,667,182.70/31,003.02
  6. Step 6: Final answer
    x = 28,180.07

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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.