Home / 20,730.25-28,607.75-11,298.88

Finding the Fourth Proportional to 20,730.25, 28,607.75 and 11,298.88

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Solution

The fourth proportional to 20,730.25, 28,607.75 and 11,298.88 is: 15,592.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.25 : 28,607.75 = 11,298.88 : x
  2. Step 2: Convert to fraction form
    20,730.25/28,607.75 = 11,298.88/x
  3. Step 3: Cross multiply
    20,730.25x = 28,607.75 × 11,298.88
  4. Step 4: Simplify right side
    20,730.25x = 323,235,534.32
  5. Step 5: Solve for x
    x = 323,235,534.32/20,730.25
  6. Step 6: Final answer
    x = 15,592.46

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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.