Home / 12,921.30-19,294.43-10,258.93

Finding the Fourth Proportional to 12,921.30, 19,294.43 and 10,258.93

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Solution

The fourth proportional to 12,921.30, 19,294.43 and 10,258.93 is: 15,318.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.30 : 19,294.43 = 10,258.93 : x
  2. Step 2: Convert to fraction form
    12,921.30/19,294.43 = 10,258.93/x
  3. Step 3: Cross multiply
    12,921.30x = 19,294.43 × 10,258.93
  4. Step 4: Simplify right side
    12,921.30x = 197,940,154.17
  5. Step 5: Solve for x
    x = 197,940,154.17/12,921.30
  6. Step 6: Final answer
    x = 15,318.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.