Home / 12,981.72-19,465.64-6,726.21

Finding the Fourth Proportional to 12,981.72, 19,465.64 and 6,726.21

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Solution

The fourth proportional to 12,981.72, 19,465.64 and 6,726.21 is: 10,085.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.72 : 19,465.64 = 6,726.21 : x
  2. Step 2: Convert to fraction form
    12,981.72/19,465.64 = 6,726.21/x
  3. Step 3: Cross multiply
    12,981.72x = 19,465.64 × 6,726.21
  4. Step 4: Simplify right side
    12,981.72x = 130,930,084.18
  5. Step 5: Solve for x
    x = 130,930,084.18/12,981.72
  6. Step 6: Final answer
    x = 10,085.73

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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.