Home / 13,956.18-19,260.60-7,989.72

Finding the Fourth Proportional to 13,956.18, 19,260.60 and 7,989.72

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Solution

The fourth proportional to 13,956.18, 19,260.60 and 7,989.72 is: 11,026.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.18 : 19,260.60 = 7,989.72 : x
  2. Step 2: Convert to fraction form
    13,956.18/19,260.60 = 7,989.72/x
  3. Step 3: Cross multiply
    13,956.18x = 19,260.60 × 7,989.72
  4. Step 4: Simplify right side
    13,956.18x = 153,886,801.03
  5. Step 5: Solve for x
    x = 153,886,801.03/13,956.18
  6. Step 6: Final answer
    x = 11,026.43

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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.