Home / 12,979.84-17,904.36-9,830.56

Finding the Fourth Proportional to 12,979.84, 17,904.36 and 9,830.56

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Solution

The fourth proportional to 12,979.84, 17,904.36 and 9,830.56 is: 13,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.84 : 17,904.36 = 9,830.56 : x
  2. Step 2: Convert to fraction form
    12,979.84/17,904.36 = 9,830.56/x
  3. Step 3: Cross multiply
    12,979.84x = 17,904.36 × 9,830.56
  4. Step 4: Simplify right side
    12,979.84x = 176,009,885.24
  5. Step 5: Solve for x
    x = 176,009,885.24/12,979.84
  6. Step 6: Final answer
    x = 13,560.25

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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.