Home / 15,919.37-21,966.28-9,203.70

Finding the Fourth Proportional to 15,919.37, 21,966.28 and 9,203.70

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Solution

The fourth proportional to 15,919.37, 21,966.28 and 9,203.70 is: 12,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.37 : 21,966.28 = 9,203.70 : x
  2. Step 2: Convert to fraction form
    15,919.37/21,966.28 = 9,203.70/x
  3. Step 3: Cross multiply
    15,919.37x = 21,966.28 × 9,203.70
  4. Step 4: Simplify right side
    15,919.37x = 202,171,051.24
  5. Step 5: Solve for x
    x = 202,171,051.24/15,919.37
  6. Step 6: Final answer
    x = 12,699.69

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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.