Home / 12,981.28-17,917.16-7,606.24

Finding the Fourth Proportional to 12,981.28, 17,917.16 and 7,606.24

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Solution

The fourth proportional to 12,981.28, 17,917.16 and 7,606.24 is: 10,498.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.28 : 17,917.16 = 7,606.24 : x
  2. Step 2: Convert to fraction form
    12,981.28/17,917.16 = 7,606.24/x
  3. Step 3: Cross multiply
    12,981.28x = 17,917.16 × 7,606.24
  4. Step 4: Simplify right side
    12,981.28x = 136,282,219.08
  5. Step 5: Solve for x
    x = 136,282,219.08/12,981.28
  6. Step 6: Final answer
    x = 10,498.37

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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.