Home / 20,492.64-28,276.56-11,995.20

Finding the Fourth Proportional to 20,492.64, 28,276.56 and 11,995.20

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Solution

The fourth proportional to 20,492.64, 28,276.56 and 11,995.20 is: 16,551.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.64 : 28,276.56 = 11,995.20 : x
  2. Step 2: Convert to fraction form
    20,492.64/28,276.56 = 11,995.20/x
  3. Step 3: Cross multiply
    20,492.64x = 28,276.56 × 11,995.20
  4. Step 4: Simplify right side
    20,492.64x = 339,182,992.51
  5. Step 5: Solve for x
    x = 339,182,992.51/20,492.64
  6. Step 6: Final answer
    x = 16,551.45

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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.