Home / 21,927.03-30,257.07-12,972.78

Finding the Fourth Proportional to 21,927.03, 30,257.07 and 12,972.78

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Solution

The fourth proportional to 21,927.03, 30,257.07 and 12,972.78 is: 17,901.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.03 : 30,257.07 = 12,972.78 : x
  2. Step 2: Convert to fraction form
    21,927.03/30,257.07 = 12,972.78/x
  3. Step 3: Cross multiply
    21,927.03x = 30,257.07 × 12,972.78
  4. Step 4: Simplify right side
    21,927.03x = 392,518,312.55
  5. Step 5: Solve for x
    x = 392,518,312.55/21,927.03
  6. Step 6: Final answer
    x = 17,901.12

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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.