Home / 15,923.40-21,976.08-9,639.24

Finding the Fourth Proportional to 15,923.40, 21,976.08 and 9,639.24

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Solution

The fourth proportional to 15,923.40, 21,976.08 and 9,639.24 is: 13,303.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,923.40 : 21,976.08 = 9,639.24 : x
  2. Step 2: Convert to fraction form
    15,923.40/21,976.08 = 9,639.24/x
  3. Step 3: Cross multiply
    15,923.40x = 21,976.08 × 9,639.24
  4. Step 4: Simplify right side
    15,923.40x = 211,832,709.38
  5. Step 5: Solve for x
    x = 211,832,709.38/15,923.40
  6. Step 6: Final answer
    x = 13,303.23

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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.