Home / 15,215.77-20,991.52-9,246.48

Finding the Fourth Proportional to 15,215.77, 20,991.52 and 9,246.48

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Solution

The fourth proportional to 15,215.77, 20,991.52 and 9,246.48 is: 12,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.77 : 20,991.52 = 9,246.48 : x
  2. Step 2: Convert to fraction form
    15,215.77/20,991.52 = 9,246.48/x
  3. Step 3: Cross multiply
    15,215.77x = 20,991.52 × 9,246.48
  4. Step 4: Simplify right side
    15,215.77x = 194,097,669.85
  5. Step 5: Solve for x
    x = 194,097,669.85/15,215.77
  6. Step 6: Final answer
    x = 12,756.35

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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.