Home / 19,981.78-27,573.90-11,477.92

Finding the Fourth Proportional to 19,981.78, 27,573.90 and 11,477.92

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Solution

The fourth proportional to 19,981.78, 27,573.90 and 11,477.92 is: 15,838.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.78 : 27,573.90 = 11,477.92 : x
  2. Step 2: Convert to fraction form
    19,981.78/27,573.90 = 11,477.92/x
  3. Step 3: Cross multiply
    19,981.78x = 27,573.90 × 11,477.92
  4. Step 4: Simplify right side
    19,981.78x = 316,491,018.29
  5. Step 5: Solve for x
    x = 316,491,018.29/19,981.78
  6. Step 6: Final answer
    x = 15,838.98

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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.