Home / 12,904.26-19,355.28-9,140.48

Finding the Fourth Proportional to 12,904.26, 19,355.28 and 9,140.48

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Solution

The fourth proportional to 12,904.26, 19,355.28 and 9,140.48 is: 13,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.26 : 19,355.28 = 9,140.48 : x
  2. Step 2: Convert to fraction form
    12,904.26/19,355.28 = 9,140.48/x
  3. Step 3: Cross multiply
    12,904.26x = 19,355.28 × 9,140.48
  4. Step 4: Simplify right side
    12,904.26x = 176,916,549.73
  5. Step 5: Solve for x
    x = 176,916,549.73/12,904.26
  6. Step 6: Final answer
    x = 13,709.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.