Home / 12,570.36-17,346.78-6,981

Finding the Fourth Proportional to 12,570.36, 17,346.78 and 6,981

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Solution

The fourth proportional to 12,570.36, 17,346.78 and 6,981 is: 9,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.36 : 17,346.78 = 6,981 : x
  2. Step 2: Convert to fraction form
    12,570.36/17,346.78 = 6,981/x
  3. Step 3: Cross multiply
    12,570.36x = 17,346.78 × 6,981
  4. Step 4: Simplify right side
    12,570.36x = 121,097,871.18
  5. Step 5: Solve for x
    x = 121,097,871.18/12,570.36
  6. Step 6: Final answer
    x = 9,633.60

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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.