Home / 12,345.78-17,037.19-6,969.36

Finding the Fourth Proportional to 12,345.78, 17,037.19 and 6,969.36

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Solution

The fourth proportional to 12,345.78, 17,037.19 and 6,969.36 is: 9,617.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.78 : 17,037.19 = 6,969.36 : x
  2. Step 2: Convert to fraction form
    12,345.78/17,037.19 = 6,969.36/x
  3. Step 3: Cross multiply
    12,345.78x = 17,037.19 × 6,969.36
  4. Step 4: Simplify right side
    12,345.78x = 118,738,248.06
  5. Step 5: Solve for x
    x = 118,738,248.06/12,345.78
  6. Step 6: Final answer
    x = 9,617.72

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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.