Home / 20,410.02-28,158.56-13,340.52

Finding the Fourth Proportional to 20,410.02, 28,158.56 and 13,340.52

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Solution

The fourth proportional to 20,410.02, 28,158.56 and 13,340.52 is: 18,405.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.02 : 28,158.56 = 13,340.52 : x
  2. Step 2: Convert to fraction form
    20,410.02/28,158.56 = 13,340.52/x
  3. Step 3: Cross multiply
    20,410.02x = 28,158.56 × 13,340.52
  4. Step 4: Simplify right side
    20,410.02x = 375,649,832.85
  5. Step 5: Solve for x
    x = 375,649,832.85/20,410.02
  6. Step 6: Final answer
    x = 18,405.17

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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.