Home / 12,345.84-17,023.68-7,864.56

Finding the Fourth Proportional to 12,345.84, 17,023.68 and 7,864.56

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Solution

The fourth proportional to 12,345.84, 17,023.68 and 7,864.56 is: 10,844.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.84 : 17,023.68 = 7,864.56 : x
  2. Step 2: Convert to fraction form
    12,345.84/17,023.68 = 7,864.56/x
  3. Step 3: Cross multiply
    12,345.84x = 17,023.68 × 7,864.56
  4. Step 4: Simplify right side
    12,345.84x = 133,883,752.78
  5. Step 5: Solve for x
    x = 133,883,752.78/12,345.84
  6. Step 6: Final answer
    x = 10,844.44

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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.